Which of the following is NOT a physical need of a toddler? Changing the toddler's clothing
Assisting while walking
Eating five to six meals a day
Engaging in simple conversation

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)

Hyper extension is the extension of a limb/body part beyond its limits