It takes about 20 seconds for a red blood cell to circle the whole body.
102
If you are cold you are more likely to be hungry because you use energy to keep warm.
143
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
Your thumb is about the same size as your nose.
124
Yawns are more contagious among people with closer relationships.
163
If your DNA was stretched out it would reach to the moon 6,000 times.
256
Chewing gum boosts your brain power.
285
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13