An important aid any weight loss program is to a. decrease water intakeb. develope ketosis by keeping carbohydrates intake low c. speed up thyroid activity with metabolic enhancersd. increase physical activity

D is the correct answer kind of goes on an bade by base basis though

Ibelieve this would be an obstacle.

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)