Only 1% of bacteria cause disease.
45
Human teeth are almost as hard as rocks!
47
The aorta, the largest artery in the body, is almost the diameter of a garden hose.
37
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
The average sperm cell swims at 8 inches per hour.
4
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Sex burns about 360 calories per hour.
861
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46