How much should a 30 year old male that is 5' 10 1/2'' tall weigh? how much should i weigh?

Depends on muscle mass anywhere from 70 to 90 is normal depending on muscle mass and fat content

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

Ithink the answer is b hope this