Human Body
Exploring "Why" questions about Human Body
481 articles
Why Do Movies Shot 30 Years Ago Look “Old” When Played Now?
Technology in camera equipment has come a long way. Lenses have gotten better. Lighting has gotten better.
Why do we get headaches?
There are many things that factor into headaches, and there are different types of them. Dehydration can be a contributing factor. The most common type of headache is a "tension" headache.
Why are our brains really good at noticing bizarre circumstances while awake, but not while asleep?
When you are asleep, a specific part of you brain is not used. That part of your brain(correct me if im wrong. Neocortex) is what controls things as common sense and spotting the abstract.
Why can reading glasses be purchased over the counter, but glasses for nearsightedness cost hundreds of dollars?
As I understand it, "reading glasses" are basically wearable magnifying lenses at various strengths. Glasses for nearsightedness (or farsightedness) are far more than that - in essence, they need to b
Why is it that when I fart while wearing pants and sitting down it feels like there is a bubble moving between my jeans and skin?
My (educated) guess is that it is an actual bubble. Fabric can contain gasses (not very well, but some of it), so it might very well be that a bubble of gas lifts the fabric from your skin and moves u
Why can’t I buy health insurance whenever I want (in the US)? What is a “qualifying life event?”
Health insurance companies aren't allowed to turn you down because you have existing medical conditions. So if you were allowed to sign up whenever you wanted, that wouldn't work; you could just wait
Why do we forget most of our dreams after waking up?
Recalling dreams has a lot to do with mindfulness of one's conscience, your inner dialogue, imagination, etc. So I think we often forget our dreams because we just aren't trained to recall them. But t
Why is it that most singers close their eyes when singing?
Why do I stick my tongue out when learning new song on my guitar? No doubt the act of closing their eyes can be part of the performance, for show, but it is also part of getting into the moment, conce
Why do I get silly or weird when I’m really tired or otherwise sleep deprived?
I've actually read that being sleep deprived is like being drunk. "After 17-19 hours without sleep, performance on some tests was equivalent or worse than that at a blood alcohol content of 0.05%" Her
Why does my skin feel so sensitive and why do my muscles ache when I have a cold?
One of the main reasons that your body aches when you are sick, like with a cold is that your body's immmune system is producing plenty of anti-bodies. These anti-bodies also produce histamines which