Banging your head against a wall uses 150 calories an hour. See more

Sex burns 360 calories per hour See more

You burn more calories sleeping than you do watching television. See more

Wearing headphones for just an hour will increase the bacteria in your ear by 700 times. See more

A shrimp's heart is in its head. See more

A cockroach will live nine days without its head, before it starves to death. See more

An average human loses about 200 head hairs per day. See more

Wearing headphones for just one hour will multiply the number of bacteria in your ear 700 times. See more

Average number of people airborne over the US any given hour: 61,000. See more

If you have a car remote and you step out of its range, point it to your head and it will work again! See more

A chicken who just lost its head can run the length of a football field before dropping dead. See more

As much as 80% of microwaves from mobile phones are absorbed by your head! See more