What strategies do advertisers use to encourage people to use tobacco and nicotine products, and how are these messages different
from the realities of the effects?

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)

Iwould put 'think' in the blank