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
Your heart will pump about 212 million liters in its lifetime.
26
Children are more allergic to cockroaches than they are to cats!
46
It takes about 20 seconds for a red blood cell to circle the whole body.
102
The human heart creates enough pressure to squirt blood 30 ft.
37
Your wounds heal faster if you lick them, you instinctively do this for that reason. Tears help, too.
20
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
While 7 men in 100 have some form of color blindness, only 1 woman in 1,000 suffers from it.
50