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Mysteries About The Human Body Explained So Even A Child Could Understand.

Mysteries About The Human Body Explained So Even A Child Could Understand.

The human body is a weird and fascinating sack of bones, organs, nerves, blood and a couple other things I can't be bothered to list. But, you know, they're there.

I know I do some basic things like breathe, eat, poop, sleep... but the WHY and HOW behind the body is shrouded in mysterious scientific jargon and... probably some other stuff. Pie charts? I dunno.

Either way. It's MYSTERIOUS.

But remain calm, because all your burning questions are about to be answered in the next 6 pages.

Thanks to all the fine folks in the Redditverse that took the time to ask and answer these questions. You humans are truly heroes of the internet.

1/12. Answered by: jpsky Ratsarecool asked: Why is it that before an orgasm you have a feeling willingness to do anything, but as soon as the orgasm passes you come to your "senses"

It's because of your limbic system. It's the more animal part of your brain that controls optimal urges, like hunger, or sex. It's responsible for your fight or flight urges as well. It resides in the back of your head.

Meanwhile your prefrontal cortex, located in your forehead, is more responsible for logic and reasoning, as well as houses your morals, or your decisions about what you are and what you want to be, and behavior that is okay, and other behavior that isn't.

The more "in charge" the limbic system becomes, the less ability your prefrontal cortex has to apply reason.

And as you start down the road of sexual arousal your brain floods with chemicals, like dopamine, which reward your behavior and makes you want more. And it feeds into your more limbic desires. At some point it takes complete control and you may lose all rational thought momentarily.

But after orgasm your body...

releases tons of chemicals, some of which counteract the dopamine high you were previously on, and prefrontal cortex logic and reasoning are restored. This can lead to the feelings of guilt or shame if you went outside your normal boundaries that your prefrontal cortex decided you wouldn't previously. And it can make you even feel scared that you lost control (depends on the individual, the stronger your prefrontal cortex the stronger these feelings may be).

And it could also be that a momentary loss of control feeds into the feelings of pleasure. For some people, who feel a need to be in constant control, that moment when you feel "it's okay" to lose control let's out some pretty wild stuff. It's why BDSM is a thing. And more extreme stuff too. It's also why you see stories about autoerotic asphyxiation, people like losing control, and add to that the high feelings of oxygen deprivation, and they feed into it so much that they push it a little too far. I mean your prefrontal cortex isn't going to try and kill you. But your limbic system might if it got animal enough.

Answered by: TheDunadan29

2/12. thomhurst asked: Why does your face physically change (E.g. Get puffy or bags under the eyes) when you get little sleep?

When you don't get enough rest, the blood vessels under your eyes can become dilated, bringing them closer to the surface and causing the area underneath the eyes to swell (causing puffy eyes) and/or appear purple, blue or even blackish in color (which causes dark circles).

Answered by: MagicWade

Continue reading all the answers to your unsolved mysteries on the next page!

3/12. Schaabalahba asked: Why is it pleasurable to stay in bed an extra five minutes? Is there any physical benefit to this?

You're generally warm and comfortable, and your brain is "booting up", which mostly has to do with cranking up its metabolism and seeking glucose. In those 5-10 minutes you wake up a bit more, blood flow changes a bit, and you finish waking up completely (which is not as cut and dry a process as it may seem, ask anyone with sleep paralysis!).

There is also pleasure to be found in following a strong urge, which might involve the dopamine reward system, but I honestly don't know if this applies here.

Answered by: Aelinsaar

4/12. becauseyouhadtos*it asked: How does my body know it's time to orgasm?

Imagine a balloon.

Imagine it has tiny gates over it's entire surface that can be open or closed, but imagine them all closed, and also that they can only be open at a certain pressure lets say just double (2x) the pressure of the atmosphere and once open the will stay open until the pressure decreases back down to 1 atmosphere.

Now imagine you blow into the balloon. None of the gates are open yet but pressure is building up. 1 & 1/4 atm., 1 & 1/2 atm.

1 & 3/4 atm.

Now the gates are starting to rumble, with each breath you blow into the balloon, they can almost feel that it's time for them to open and release all of the air pressure inside the balloon.

Finally.. you blow enough air for the pressure inside the balloon to reach 2 atm.

The front velocity of the air blown by your mouth causes the gates at the back of the balloon to open first but the others follow in a wave pattern around the outside of the balloon, so that in about a full second or two, all the gates are open but you can see the wave.

The air rushes out and the balloon deflates.

Then you apologize and say we can try and inflate the balloon again in about 10-15 minutes.

Answered by: OncewasaBlastocoel

Continue reading more about weird body mysteries on the next page!

5/12. faaaabulous1867 asked: I see kids that are younger and younger with glasses every day. How do they measure how they can see and how bad their eyes are when it's literally a baby that can't even walk or talk, let alone read letters aloud from an eye exam?

Awesome question! (I'm a pediatric optometry resident)

So for children too young to give us a reliable subjective "1 or 2", we base the prescription on objective measurements. We can objectively measure their refractive error with retinoscopy (as mentioned above). That's when we shine a light in their eyes and use lenses to determine the prescription. It's very versatile, and we don't need a machine so it's perfect for kids. They can do anything (eat, watch tv) as long as their eyes are open for us to get the measurement.

In kiddos, it's best to do this when they're dilated because the dilation drops force their eyes to relax their focusing/accommodation ability (which they have a lot of). Kids can accommodate through far sighted prescription/refractive error. Prescriptions for kids under 7 should almost always be determined with dilating drops. It's normal to be a little far sighted when you're young, and as you grow up you tend to become more near sighted.

As paediatric optometrists, one of our greatest worries is amblyopia or lazy eye. That's when a child either has an eye turn, or high prescription leading them to favor one eye over the other. The non-favored eye doesn't develop the proper connections in the brain to see 20/20 because the kid will always favor his "good eye". That's why you'll see some kids wearing an eye patch. It's to force them to use their "bad or lazy eye" so the brain can recognize and developed clear vision through that eye. It's important to treat lazy eye when they're young while the visual system is still malleable.


6/12. The_Hindu_Hammer asked: Why is it that when I wiggle my finger in my belly button, I feel it in my penis?

So, I've never experienced this, but I can give a reason from Anatomy and Embryology. During development as a fetus, the testes originate right around the level of the abdomen near the belly button. Here, they develop nerves that run to the spinal cord at this level (vertebrae T10-12, if I remember correctly).

During development, the testes move downward, travel through the inguinal canal (basically a small tunnel where your leg meets your abdomen), and descend into the testes. They remain connected to the spinal cord via the same nerves, the nerves just get longer. In the spinal cord, there's a network of nerves that integrate signals coming from the organs and the overlying skin at that area.

Those signals, 'sensation from the testes' vs 'sensation from the belly button' remain mostly separate, but there are a few overlapping connections. Because we're not really used to feeling things from our internal organs, often times our brain interprets signals coming from them as coming from the same level as that sensation. In the case of the testes, this sensation is referred to the belly button area, so often pain from the testes occurs in the belly button area (this is called "referred pain"). I suppose it's also possible that the reverse could happen as well, that sensation from the skin can be referred to the internal organs.

Answered by: BCSteve

Why do you fidget? Find out on the next page!

7/12. F--Jokes101 asked: What causes the urge to fidget?

Its a natural reaction through your nervous system little impulses and such almost like putting electricity through say a wet noodle, makes it move about.

There's also a biological and evolutionary method, basically if you sit still for too long blood begins to pool, veins and arteries are cramped and clenched... So the more you fidget the less of a risk there is for developing a blood clot. Its basically a mini survival instinct.

When its cold, fidgeting and shivering causes you to keep warm through movement and keeping your blood circulating. The reason this works is the same reason fidgeting helps you from forming a blood clot.

Answered by: ValaskaReddit

8/12. AlanSleeper asked: Why do Humans get aroused watching others having sex?

Our brains have mirror neurons, which fire both when we do thing X and when we see thing X being done by someone else. They allow us to hurt when others suffer, be happy when others are joyful, and, well, become aroused when others fuck.

Continue reading about your body on the next page! (Isn't this like grade 4 health class?!)

9/12. creepsmcreepster asked: Why do we see black spots after looking into a bright light?

The spots aren't, strictly speaking "black", they are "no signal" areas.

Sight is basically a chemical reaction. The rods and cones of your eyes produce dyes. (See "Rhodopsin" and/or "visual purple" et al.) These dyes are how your eyes see.

Photons come in, intersect, and change these dyes. This is what produces the initial chemical stimulus that becomes the nerve impulse response to light.

The photon(s) intersecting with the dyes "uses up" the dye.

Your body is constantly making new dye and cleaning up the used-up dye.

When you look at a bright light it uses up a lot of dye. Then those rods and cones don't have enough to really generate a good signal.

Similarly, if you've been in darkness for a while, you've got a lot of dye built up and you can see really well in the very dim light. Further the very dim light uses up very little dye and so you continue to see well in the dimness.

So this whole mechanism is why the room looks "darker" right after you turn off the lights, and then "your eyes adjust". It's also why the "blue spots" move with your eyeballs, because its the individual sensors that are exhausted.

Answered by: BitOBear

10/12. allboutthatlife asked: What is physically happening when your ear suddenly starts ringing?

The first thing to understand is how we perceive sound: We have outer and inner ear hair cells, and they both detect vibrations and pressure changes of the basilar membrane. The reason we have two types of hair cells is because, while vibrations travel very efficiently in the fluid of the inner ear, they require a lot of energy (think about trying to run on land vs. trying to run in a pool).

Outer ear cells, then, are designed as amplifiers. When they detect low energy vibrations, they vibrate in time with them, amplifying the signal and sending it to the inner ear. Most of the time, this system works perfectly, but - like any biological system - it can get buggy. Sometimes the outer ear cells will freak out and vibrate on their own, and that's when you get the sudden onset tinnitus. There's also a control system that will tell the outer ear hair cells to knock it off, but it takes about 30-45 seconds to kick in.

Answered by: Archchancellor

What happens when you need to fart but then it goes away? Find out on the next page!

11/12. Tinyshlo asked: What happens to a fart when you don't let it out but the need to fart goes away?

Your colon is an air tight tube. The ONLY way a fart is getting out is through the anus. When you hold a fart in, you pushing it back up above the internal anal sphincter. Pressure below the internal anal sphincter and around the external anal sphincter is that "I have to fart" or "I gotta poop" sensation. More pressure around the external sphincter leads to greater stretching of the sphincter. Greater stretching = greater urge. The fart will eventually come back down, you've just temporarily forced it further up "inside", beyond the physical point in the colon where you can feel the urge to let it out.

Answered by: Shmalpin

12/12. crazy_angel1 asked: why when you think or see very sour things, you start to salivate?

A sour taste comes from acids in the food, so it may be a response to help protect tooth enamel from being destroyed by the acid. This is why you salivate before vomiting, as well. So your brain could be deciding you're about to eat something acidic, and pumps up salivary production in response.

Answered by: MapsAreCool

People Who Actually Died And Were Revived Share Their Experiences

"Reddit user AlaskaStiletto asked: 'Redditors who have 'died' and come back to life, what did you see?'"

Close up face of a woman in bed, staring into the camera
Photo by Jen Theodore

Experiencing death is a fascinating and frightening idea.

Who doesn't want to know what is waiting for us on the other side?

But so many of us want to know and then come back and live a little longer.

It would be so great to be sure there is something else.

But the whole dying part is not that great, so we'll have to rely on other people's accounts.

Redditor AlaskaStiletto wanted to hear from everyone who has returned to life, so they asked:

"Redditors who have 'died' and come back to life, what did you see?"


Happy Good Vibes GIF by Major League SoccerGiphy

"My dad's heart stopped when he had a heart attack and he had to be brought back to life. He kept the paper copy of the heart monitor which shows he flatlined. He said he felt an overwhelming sensation of peace, like nothing he had felt before."



"I had surgical complications in 2010 that caused a great deal of blood loss. As a result, I had extremely low blood pressure and could barely stay awake. I remember feeling like I was surrounded by loved ones who had passed. They were in a circle around me and I knew they were there to guide me onwards. I told them I was not ready to go because my kids needed me and I came back."

"My nurse later said she was afraid she’d find me dead every time she came into the room."

"It took months, and blood transfusions, but I recovered."


Take Me Back

"Overwhelming peace and happiness. A bright airy and floating feeling. I live a very stressful life. Imagine finding out the person you have had a crush on reveals they have the same feelings for you and then you win the lotto later that day - that was the feeling I had."

"I never feared death afterward and am relieved when I hear of people dying after suffering from an illness."



The Light Minnie GIF by (G)I-DLEGiphy

"I had a heart surgery with near-death experience, for me at least (well the possibility that those effects are caused by morphine is also there) I just saw black and nothing else but it was warm and I had such inner peace, its weird as I sometimes still think about it and wish this feeling of being so light and free again."


This is why I hate surgery.

You just never know.



"More of a near-death experience. I was electrocuted. I felt like I was in a deep hole looking straight up in the sky. My life flashed before me. Felt sad for my family, but I had a deep sense of peace."



"Nursing in the ICU, we’ve had people try to die on us many times during the years, some successfully. One guy stood out to me. His heart stopped. We called a code, are working on him, and suddenly he comes to. We hadn’t vented him yet, so he was able to talk, and he started screaming, 'Don’t let them take me, don’t let them take me, they are coming,' he was scared and yelling."

"Then he yelled a little more, as we tried to calm him down, he screamed, 'No, No,' and gestured towards the end of the bed, and died again. We didn’t get him back. It was seriously creepy. We called his son to tell him the news, and the son said basically, 'Good, he was an SOB.'”



"My sister died and said it was extremely peaceful. She said it was very loud like a train station and lots of talking and she was stuck in this area that was like a curtain with lots of beautiful colors (colors that you don’t see in real life according to her) a man told her 'He was sorry, but she had to go back as it wasn’t her time.'"


"I had a really similar experience except I was in an endless garden with flowers that were colors I had never seen before. It was quiet and peaceful and a woman in a dress looked at me, shook her head, and just said 'Not yet.' As I was coming back, it was extremely loud, like everyone in the world was trying to talk all at once. It was all very disorienting but it changed my perspective on life!"


The Fog

"I was in a gray fog with a girl who looked a lot like a young version of my grandmother (who was still alive) but dressed like a pioneer in the 1800s she didn't say anything but kept pulling me towards an opening in the wall. I kept refusing to go because I was so tired."

"I finally got tired of her nagging and went and that's when I came to. I had bled out during a c-section and my heart could not beat without blood. They had to deliver the baby and sew up the bleeders. refill me with blood before they could restart my heart so, like, at least 12 minutes gone."


Through the Walls

"My spouse was dead for a couple of minutes one miserable night. She maintains that she saw nothing, but only heard people talking about her like through a wall. The only thing she remembers for absolute certain was begging an ER nurse that she didn't want to die."

"She's quite alive and well today."


Well let's all be happy to be alive.

It seems to be all we have.

Man's waist line
Santhosh Vaithiyanathan/Unsplash

Trying to lose weight is a struggle understood by many people regardless of size.

The goal of reaching a healthy weight may seem unattainable, but with diet and exercise, it can pay off through persistence and discipline.

Seeing the pounds gradually drop off can also be a great motivator and incentivize people to stay the course.

Those who've achieved their respective weight goals shared their experiences when Redditor apprenti8455 asked:

"People who lost a lot of weight, what surprises you the most now?"

Redditors didn't see these coming.

Shiver Me Timbers

"I’m always cold now!"

– Telrom_1

"I had a coworker lose over 130 pounds five or six years ago. I’ve never seen him without a jacket on since."

– r7ndom

"140 lbs lost here starting just before COVID, I feel like that little old lady that's always cold, damn this top comment was on point lmao."

– mr_remy

Drawing Concern

"I lost 100 pounds over a year and a half but since I’m old(70’s) it seems few people comment on it because (I think) they think I’m wasting away from some terminal illness."

– dee-fondy

"Congrats on the weight loss! It’s honestly a real accomplishment 🙂"

"Working in oncology, I can never comment on someone’s weight loss unless I specifically know it was on purpose, regardless of their age. I think it kind of ruffles feathers at times, but like I don’t want to congratulate someone for having cancer or something. It’s a weird place to be in."

– LizardofDeath

Unleashing Insults

"I remember when I lost the first big chunk of weight (around 50 lbs) it was like it gave some people license to talk sh*t about the 'old' me. Old coworkers, friends, made a lot of not just negative, but harsh comments about what I used to look like. One person I met after the big loss saw a picture of me prior and said, 'Wow, we wouldn’t even be friends!'”

"It wasn’t extremely common, but I was a little alarmed by some of the attention. My weight has been up and down since then, but every time I gain a little it gets me a little down thinking about those things people said."

– alanamablamaspama

Not Everything Goes After Losing Weight

"The loose skin is a bit unexpected."

– KeltarCentauri

"I haven’t experienced it myself, but surgery to remove skin takes a long time to recover. Longer than bariatric surgery and usually isn’t covered by insurance unless you have both."

– KatMagic1977

"It definitely does take a long time to recover. My Dad dropped a little over 200 pounds a few years back and decided to go through with skin removal surgery to deal with the excess. His procedure was extensive, as in he had skin taken from just about every part of his body excluding his head, and he went through hell for weeks in recovery, and he was bedridden for a lot of it."

– Jaew96

These Redditors shared their pleasantly surprising experiences.


"I can buy clothes in any store I want."

– WaySavvyD

"When I lost weight I was dying to go find cute, smaller clothes and I really struggled. As someone who had always been restricted to one or two stores that catered to plus-sized clothing, a full mall of shops with items in my size was daunting. Too many options and not enough knowledge of brands that were good vs cheap. I usually went home pretty frustrated."

– ganache98012

No More Symptoms

"Lost about 80 pounds in the past year and a half, biggest thing that I’ve noticed that I haven’t seen mentioned on here yet is my acid reflux and heartburn are basically gone. I used to be popping tums every couple hours and now they just sit in the medicine cabinet collecting dust."

– colleennicole93

Expanding Capabilities

"I'm all for not judging people by their appearance and I recognise that there are unhealthy, unachievable beauty standards, but one thing that is undeniable is that I can just do stuff now. Just stamina and flexibility alone are worth it, appearance is tertiary at best."

– Ramblonius

People Change Their Tune

"How much nicer people are to you."

"My feet weren't 'wide' they were 'fat.'"

– LiZZygsu

"Have to agree. Lost 220 lbs, people make eye contact and hold open doors and stuff"

"And on the foot thing, I also lost a full shoe size numerically and also wear regular width now 😅"

– awholedamngarden

It's gonna take some getting used to.

Bones Everywhere

"Having bones. Collarbones, wrist bones, knee bones, hip bones, ribs. I have so many bones sticking out everywhere and it’s weird as hell."

– Princess-Pancake-97

"I noticed the shadow of my ribs the other day and it threw me, there’s a whole skeleton in here."

– bekastrange

Knee Pillow

"Right?! And they’re so … pointy! Now I get why people sleep with pillows between their legs - the knee bones laying on top of each other (side sleeper here) is weird and jarring."

– snic2030

"I lost only 40 pounds within the last year or so. I’m struggling to relate to most of these comments as I feel like I just 'slimmed down' rather than dropped a ton. But wow, the pillow between the knees at night. YES! I can relate to this. I think a lot of my weight was in my thighs. I never needed to do this up until recently."

– Strongbad23

More Mobility

"I’ve lost 100 lbs since 2020. It’s a collection of little things that surprise me. For at least 10 years I couldn’t put on socks, or tie my shoes. I couldn’t bend over and pick something up. I couldn’t climb a ladder to fix something. Simple things like that I can do now that fascinate me."

"Edit: Some additional little things are sitting in a chair with arms, sitting in a booth in a restaurant, being able to shop in a normal store AND not needing to buy the biggest size there, being able to easily wipe my butt, and looking down and being able to see my penis."

– dma1965

People making significant changes, whether for mental or physical health, can surely find a newfound perspective on life.

But they can also discover different issues they never saw coming.

That being said, overcoming any challenge in life is laudable, especially if it leads to gaining confidence and ditching insecurities.

In 2017, I returned to my office after my lunch break to hear my supervisors discussing Tom Petty. This seemed like a random topic to me until one of my supervisors told me Tom Petty had passed away. He was a huge fan of Petty and spent the next hour or so combing through the internet to get more information.

He came back into the room my other supervisor and I were working in and announced that Tom Petty wasn't dead after all. News outlets had jumped the gun to announce his death, but he was actually still alive.

The next day, I came in to find out that Tom Petty was dead; the news may have been premature, but true.

This is a classic example of the rumor being started on the internet. Sometimes, like with the news of Tom Petty's death, the rumor can run wild and appear everywhere. Other times, the rumor can be seen by just a few people and dismissed. However, a lot of times, these rumors turn out to be true.

Redditors know a lot of internet rumors that turned out to be true, and are eager to share.

It all started when Redditor strakerak asked:

"What started out as an internet rumor that ended up being infamously true?"

The King Of Pop

"Michael Jackson writing the music for Sonic 3."

"He actually did, but was never credited on the game because it would breach his contract with his record label."

– -WigglyLine-

"He did the same when he appeared on The Simpsons. He appeared under a pseudonym, and the Producers said it was an impersonator."

"Only years later they confirmed it really was Michael."

"His singing voice was actually done by an impersonator, though."

– given2fly_

The Truth Comes Out

"In 1998, US Men’s National Team captain John Harkes was shockingly cut from the team right before the World Cup. The coach claimed it was because Harkes wouldn’t fit into his new preferred formation, but rumors flew on the early internet that it was actually because he had slept with his teammate Eric Wynalda’s wife. The rumor was so well-known in soccer circles that Harkes expressly denied it in his autobiography the next year."

"Fast forward 12 years to 2010 and Wynalda admits it’s true. The coach then came out and admitted it was why he dropped Harkes, but that he’d planned to keep the secret as long as Wynalda did."

– guyfromsoccer

Video Evidence

"The Tim Burton Hansel and Gretel that aired once on halloween in the 80's."

"I heard for years that it was fake but I knew it was real because my dad recorded everything in the 80s and he recorded that. We let a good friend of ours borrow it and switch it over from VHS to DVD and soon after that it made its way on to the internet , and there it is now. I know it's our copy because the tracking in the beginning is screwed up. Still have the VHS."

– Frozenthickness

"There was a similar story with a Nickelodeon movie called Cry Baby Lane. It was supposed to be so scary that Nickelodeon got complaints and denied its existence for years. Someone uploaded a taped copy to youtube about a decade ago."

– PattiAllen

The Movie Business

"That North Korea hacked Sony Pictures because of The Interview movie."

"I worked in the movie business at the time and the account managers at Sony all basically needed to get new identities as all of their personal information got leaked online."


"My partner worked on that movie and the production bought all the crew 1 year of an identity theft tracking service."


Keep Away From The Ears Of Kids

"Some banned episodes or scenes of cartoons."

"For example, I remember there was a Dexter’s Lab cartoon where he clones evil versions of DeDe and himself and they swear like every other word (censored of course), and people debated whether it even existed cause they only aired it like once. Now it’s pretty accessible online."

– Spledidlife

Yes, It's True

"Echelon, a massive electronic espionage system by the US and allies to intercept all electronic messages, especially emails."

"In the mid-nineties it was a topic on conspiracy BBS boards. A lot of people in my bubble at the time (mainly uni students in Europe) were including fake threats to the US in the their email signatures as a way to "protest" and "fill the system with false alarms" (obviously useless)."

"Then, in 1999-2000 came out to be true and a lot of security service agencies from UK and other US allies started to admit they were part of the espionage network."

– latflickr

How The Mighty Fell

"John Edward’s love child."

– ACam574

"A reminder that he was cheating on his wife while she was hospitalized for cancer treatment."

– Fanclock314


"Carrie Fisher's heart attack. Some a**hole who was on the same flight was livetweeting the whole medical emergency and justified it by insisting she was just making sure the family was informed."

– everylastlight

It Actually Happened

"Every year around her birthday there was a rumor that Betty White died. When I heard she died, I scoffed, saying that dumb rumor is back.... then saw it on the news. I was in shock."

– Known-Committee8679

"The fact that Betty died literally right before she turned 100 is such a Betty White way to go out."

– Paganigsegg

Big Actor, Small Roles

"I distinctly remember some rumors about the reason why Bruce Willis was taking so many roles in sh*tty movies before it was announced he has dementia."

– KampferMann

"RedLetterMedia did a deep dive on his recent movie activity to try and work out why exactly he was taking part in basically scam-movies. They noticed he had an earpiece in one of the scenes and joked that the director was feeding him lines. I remember they even disclaimed over the rumours at the time, and possible made a follow-up vid when it was revealed to the public."

– CardinalCreepia

What To Do Next?

"That the writer of LOST were making it up as they went."

"Turned out to be absolutely true."

– homarjr

That last one was kind of obvious!

Do you have any to add? Let us know in the comment below.