Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
Yawns are more contagious among people with closer relationships.
163
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
A man's beard grows fastest when he anticipates sex.
239
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Our brains have a negativity bias and will remember bad memories more than good ones.
15