How does the movement of muscles attached to the ribcage and diaphragm initiate
expiration? (3 points)

The muscles relax, which pulls the rib age downward and decreases the volume of the chest cavity.

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.