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AR15.COM
12/18/2008 8:15:17 AM EDT
Sitting is the most stressful position you can be in for your back. A large percentage of back injuries are caused by sitting.
12/18/2008 8:15:53 AM EDT
[#1]
The human head weight 8 pounds.
12/18/2008 8:26:26 AM EDT
[#2]
Your arm span is equal to your height (in most people).

The distance from elbow to your wrist is equal to your foot size.

Your eyes are the same size at birth as they will be for the rest of your life.
12/18/2008 8:27:09 AM EDT
[#3]
thats why I lay on my chair