Fidgeting can burn about 350 calories a day.
201
Fingernails grow nearly 4 times faster than toenails.
31
The average sperm cell swims at 8 inches per hour.
4
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
The average human body contains enough fat to make seven bars of soap.
45
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
Banging your head against a wall uses 150 calories an hour.
57