Increased duration refers to how greatly one increases the time spent training. is it true or false

This is true. Look up the definition of duration and find that it's the time of when something continues.

Hoped I helped!

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.