What kind of exercise your heart work more efficiently

Aerobic exercise makes your heart your heart more efficient by pumping more good with each beat do it doesn't work as hard.
Running, walking, baseball, football, basketball are some examples.

Idk why don’t you pay attention ok class

Air goes past the epiglottis and into the trachea when you breathe in. from there, it goes to your vocal cords in the larynx until it reaches the bronchi. from the bronchi, air passes into each lung.