Human Body
Exploring "Why" questions about Human Body
480 articles
Why do we wake up early when we don’t have to but tend to wake up late when we need to be up?
The simple answer is stress causes this. By setting a schedule your body will fall into a rhythm. After a while you don't really need the alarm at all.
Why do we yawn when others yawn near us?
A few people think differently about why this happens. One idea is that when we see another person yawn, our brain tells our body that the area we are in has a low oxygen level. Another is the relatio
why do your ears ring after loud noise and have been damaged?
The cochlea in each of your ears is a spiralling organ that contains a bunch of tiny little "hairs." When sound is transmitted from the air into your cochlea, it travels through the cochlea and depres
Why do we sweat, even when not being physically active, at 30ºC?
your body temp is 37° because it's permanently cooled down. you're burning sugar in your cells continuously, increasing your body temperature. unfortunately your organs are very sensitive to overheati
Why don’t they give brain scans to detect mental illnesses?
If it was possible to diagnose mental problems that way, that would be a good idea. But most problems are caused by things too subtle to be seen on an MRI. Hormones, for instance, or other chemical im
Why do certain “noises” (i.e., a fingernail scratching a chalkboard) irritate us so much?
Certain sounds at particular frequencies are very unpleasant to the human ear, the sound of that falls into that range. However it isn't something that effects all humans the same, some tolerate the s
Why are the things that taste the best bad for us?
Let's think about this from an evolutionary perspective. Way back in the day, (like way way way back) humans struggled for food just like every other animal. It was to our species evolutionary advanta
Why is it more expensive to eat healthy?
Your premise is somewhat flawed; it is not necessarily more expensive to eat healthy. It certainly *can* be, if you buy certain types of raw ingredients, but does not have to be. Industrial scale food
Why is it that when you speed a video up, it gets higher pitched?
Sound is vibration of the air interpreted by your eardrum. Fast frequencies are interpreted as being high pitched. Low frequencies are interpreted as low pitch.
Why is my original iPad completely useless after only a few years of ownership?
Because the software it's running is made for newer-gen models. > Is my new iPad going to do this in a couple years? Eventually, but not for much longer.