The male fetus is capable of attaining an erection during the last trimester.
75
Flu shots only work about 70% of the time.
18
It takes about 20 seconds for a red blood cell to circle the whole body.
102
During menstruation, the sensitivity of a woman's middle finger is reduced.
47
Fingernails grow nearly 4 times faster than toenails.
31
Putting sugar on a wound or cut will greatly reduce pain and speed up the healing process.
25
Lack of water is the #1 trigger of daytime fatigue.
148