Which person engages in habits that are most harmful to his or her health?

A person that can’t control his/her habit and health limits.

Unhealthy and overweight person who does not care about the calories of his food intake

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)