Flu shots only work about 70% of the time.
18
If you stop working out, it takes twice as long to lose strength than it took to gain it.
16
A woman's sense of smell is most sensitive during ovulation.
34
Phobatrivaphobia is fear of trivia about phobias.
39
Every hour one billion cells in the body must be replaced.
17
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
One quarter of the human brain is used to control the eyes.
43