It takes about 20 seconds for a red blood cell to circle the whole body.
102
Fingernails grow fastest on the hand you favor.
44
Like fingerprints, everyone's tongue print is different!
71
The male fetus is capable of attaining an erection during the last trimester.
75
The average person who stops smoking requires one hour less sleep a night.
79
Your stomach produces a new layer of mucus every two weeks so that it doesn't digest itself.
160
It has been shown that caffeine causes headaches when stopped suddenly and can cause morning headaches that are relieved by a dose of caffeine.
101
The Internal Revenue Service audits 87 percent of women who claim breast implants as tax deductions.
54