Layout analysis at Arnold Palmer Hospital resulted in recognizing that the nursing staff spent of their time just walking.

A. 30 to 40%
B. 20 to 30%
C. over 50%
D. 10 to 20%
E. 40 to 50%

Because without physical activity, the body has extra "energy" if you will, and so when it is time for bed you are not tired, so you end up staying up all night. also there is probably an effect on your internal clock, which messes with your melatonin production which goes hand in hand with your sleep cycle

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