Human Body
Exploring "Why" questions about Human Body
481 articles
Why are most sweat glands in the armpits ?
They are not. You have sweat glands all over your body and while there may be a slightly higher concentration of them in your armpits than the average density on say your stomach it is not anywhere cl
Why do we get those weird wrinkles/lines on our faces or body after sleeping?
The skin was pressed against a fold or wrinkle of fabric which created a lump, which in turn caused a temporary indentation in your skin. This happens after sleeping because you don't move for a long
Why does all the research suggest that cats are indifferent to humans when my cat is clearly very affectionate beyond his basic feline needs?
Same here. When I'm upset, my cat comes sauntering up to me purring like a motorboat to comfort me. If I'm crying, he curls up next to me and wipes away my tears with his cheek.
Why do some dogs/cats see and hear what is on the TV as if it is actually right there in front of them, and others don’t even notice that the TV is there?
The smarter animals ignore it because they know it is just a picture. The dumb ones are fooled by the illusion.
Why do I see a shadow on the inside of my eye when I push my finger on the outside edge of my eye?
Your finger pushes against your eye and distorts the lens that focuses light on the back of your eye. A small indentation can create a black spot where light doesn't focus, or focuses very poorly. It'
Why do toe nails typically have fungus while fingernails usually don’t?
Toenails often are confined in a dark, warm, moist environment — inside your shoes — where fungi can thrive. Toes usually have less blood flow than do fingers, making it harder for your body's immune
Why can most things in the body be transplanted, except the eyes?
Whole eyes are really tricky to transplant for a few reasons: 1. The retina dies in only 2-4 hours without a blood supply. The donor and recipient would have to be right by each other.
Why am I no longer hungry after being hungry for a long time?
You eat food and your stomach has stuff in it, then when it starts to be digested your body want to replenish the lost food in your stomach. After there is no more food your body adjusts to have littl
Why does sleeping feel so good shortly after waking up?
During sleep, a horomone called melatonin is released throughout the night to induce a relaxing sensation throughout the body. Once the body is triggered to wake up (I.e. sunlight or an alarm clock) t
why do I get “chills” all over my body when I see or hear something beautiful? Moreover, what are those chills and why aren’t they just felt all the time?
Frisson is the sudden feeling of excitement. There is a subreddit for it _URL_0_ Quoted from their sidebar "Have you ever felt a sudden, passing sensation of excitement, a shudder of emotion from an