. The classes of nutrients include a. carbohydrates and fats. c. minerals and vitamins.
b. proteins and water. d. All of the above

The answer for this is the answer D that is the answer I think

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