During a typical human life span, the human heart will beat approximately 2.5 billion times.
21
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
Sex burns about 360 calories per hour.
861
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
One or two alcohol drinks a day can be anti-inflammatory.
75
It takes 17 muscles to smile, 43 to frown.
65
Scientists estimate that laughing 100 times is equivalent to a 10-minute workout on a rowing machine.
202
The right lung takes in more air than the left.
30