What should not be more than 10 of your body weight?
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hey mate............
here is your answer ,
A backpack should not be more than 10 prcnt of your body weight .
6 out of 10 students , ages 9 to 20 , reported chronic back pain related to backpacks . the most common complaints come from backpacks that are too heavy or improperly worn and cause pain or strain to the back and neck.
hope it helps you..............
here is your answer ,
A backpack should not be more than 10 prcnt of your body weight .
6 out of 10 students , ages 9 to 20 , reported chronic back pain related to backpacks . the most common complaints come from backpacks that are too heavy or improperly worn and cause pain or strain to the back and neck.
hope it helps you..............
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