Depending on your age, biology class was somewhere between long time ago and ancient history. And even if you are biology major, there might be some fun and interesting, but mostly useful facts you didn’t know about your own body. And yes, I said fun, because biology is fun, and if you say “na-ha”, then no-one ever told you about the awesome stuff hidden inside the science of biology. So read up, this might clear up some misconceptions you had.
Appendix – mostly regarded as evolutionary mistake, organ that seems to only be noticed if we have to go to surgery to remove it. It is popular belief that appendix has no purpose, but scientists now believe it’s not entirely true: appendix might be key player in distribution of bacteria needed for your stomach to work and perform well. So if you still have yours, count yourself lucky!
Hair – it’s an old question in evolution study: if we share the same predecessor as apes, why did we lose our fur? Answers mostly revolve around the fact that we didn’t need it as we progressed to more advanced means of keeping safe and worm. But, there is another theory: we lost our body hair because we resemble babies more. Bare with us, now – it is stated that as species go through a process of domestication and get better life conditions, their “wild genes” deteriorate and they become more of adult versions of their young selves. Like with wolves we domesticated. Compared to chimpanzee, humans actually have the same amount of hair, it’s just that ours is mostly fuzzy, barely visible layer – making us look like infant monkeys. No offence there.
Vacuum – if movies are to be trusted, human bodies exposed to the vacuum of space will either freeze instantly, blow up or explode. And, that is why you don’t believe in movie science. Exposed to vacuum – the worst thing for you is the fact that there is no air. Low temperatures are not as drastic as Hollywood would have us believe, and while not comfortable, space won’t turn you into an ice pop. All of this is theoretical, as we still haven’t tested this by releasing a naked dude into outer space, so it is still not recommendable. Folks, do not try this at home.
Electromagnetic force – slap yourself. Or slap a friend. Not too hard, and not with anger, this is for science. Did you slap a friend? Now tell him (don’t hit girls, man) you didn’t touch him at all. What’s that? He’s calling you a douche? Well, you are not, although this could have been presented differently – you are playing with electromagnetic repulsion. The fact is – you never touch anything. No one person ever touched another one. All thanks to ER – atoms of your palm came very, very close to atoms of your friend’s face – but they never touched, and as you did transfer force onto him, actual contact never happened. Amazing, right?