Human Body
Exploring "Why" questions about Human Body
481 articles
Why do people like to lean backwards in a chair to just before the point of tipping over?
When you lean back in your chair you change your center of gravity. At the point just before falling forwards or backwards you are perfectly balanced over the central part of your body. This makes us
Why does our voice sound different in a recording than what we hear ?
When you talk, you hear your voice both through vibrations in the air (which is the only thing that everyone else hears), as well as through vibrations in the bones of your skull (which only you can h
Why are there different research funding organizations for different types of cancer?
We know the root cause of cancer, cells that multiply uncontrollably due to some sort of mutation or defect. Each type of cancer requires different methods to treat however due to the nature of the ty
Why do some seniors have a hard time learning basic computer skills even though it seems very intuitive to most people?
Take a field you're inexperienced in. Let's say baseball. A professional baseball player says, "Swing the bat like this." And he shows you how.
Why is blood red but do our veins look blue?
The fat under your skin absorbs low frequency light. The higher frequency blue wavelengths are what you see while the lower reds are filtered out. Some people try to spread the old wives tale that blo
why does cleaning your ears cause gag reflex?
It does? If it actually does, I would say it’s because the ear, nose and throat are all connected.
why do cats have to smell everything? Why can’t they just look at the things?
ELI5 : Cats have really poor vision for details, everything they look at is fuzzy and doesn't have as many colours as we have. Their eyes are however good at tracking motion (think T-Rex from the firs
Why does it hurt to move a limb after it “fell asleep”?
You have nerves in your body that send signals to different parts to work-- specifically muscles. They begin from your spinal cord, branch, and extend all the way to your fingers and toes. Your arm or
Why is it bad to sleep with contacts on?
They restrict the amount of oxygen your eyes get. Things like sore/red eyes are pretty usual, sometimes it can get so bad that you can't even put them in until they get better. My sister and I seem to
Why have I never heard of someone getting heart cancer?
It's just a very, very rare form of cancer so it's not heavily talked about. _URL_0_ Apparently the drummer of Kiss died from it, though.