Your thumb is about the same size as your nose.
124
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
The human sigh acts as a physiological reset button.
23
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111