What is the role of the eustachian tube? a. to send electrical messages to the auditory nerve. b. to maintain equal air pressure on both sides of the eardrum. c. to pick up sound waves. d. to carry vibrations to the inner ear.

People need to distract themselves with actitives. they can also find a natural high. an example would be eating alot of meat. that meat can release dopamine to the brain which gives one a natural high feeling.

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