Which statements are true of the spinal cord? Check all that apply. It is found in the cranial cavity.

It is found in the dorsal cavity.

It houses the brain.

It is a nervous system communication pathway.

A,B,DHope this helps! Have a great day

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

That isn't a question