What condition may be a result of excessive sweating or drinking cold fluids too fast after exercising?

It can lead to water intoxication or dehydration.

Ibelieve the answer is d.

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)