The average sperm cell swims at 8 inches per hour.
4
Every human spent about half an hour as a single cell.
144
Our brains have a negativity bias and will remember bad memories more than good ones.
15
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
Human hair and fingernails continue to grow after death.
7
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18