Which activity would be BEST for prolonged training within your target heart rate zone? -sprinting
-stair climbing
-static stretching
-high intensity interval training

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

Answermaintaining a balance of physical, mental, emotional,and social well being;

Answera tightly sealed house with an unvented water heater;

C) hope this : )