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