Acommon strategy for coping with anxiety depression or thoughts of success is finding support from people around you

Try tylenol or see a professional

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