Sex burns about 360 calories per hour.
860
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
The right lung takes in more air than the left.
30
Crushed cockroaches can be applied to a stinging wound to help relieve the pain.
31
The human brain is insensitive to pain.
76
Your heart pumps about 2,000 gallons of blood each day!
53
Your heart rate can rise as much as 30% during a yawn.
69