Answer:
Cardiac output is affected by fitness level and each of the four factors in the FITT formula.
Explanation:
Exercising regularly can help you in many things like flexibility speed body strength tolerance to running or exercising a certain amount of time
EXAMPLE:if you join gymnastics doing flips and tossing and turning flipping and running all day can increase flexibility because to do certain stunts your body needs to have a certain level of flexibility like doing back bends if you do not have the stage of flexibility that it requires you will not be capable of doing it
It is a passageway for urine and semen.
Maybe it could be that their brains aren't fully developed and they are going through a lot of different hormones which makes things more intense emotionally.