Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
Deep Breathing gives you health benefits similar to aerobics.
39
Children are more allergic to cockroaches than they are to cats!
46
Flu shots only work about 70% of the time.
18
The average person who stops smoking requires one hour less sleep a night.
79
The smallest human penis ever recorded was just 5/8 of an inch long!
77
Your thumb is about the same size as your nose.
124
Unlike dogs, pigs, and some other mammals, humans cannot taste water. They taste only the chemicals and impurities in the water.
95