Steven Used to Spend Only 1 Hour in the Gym

Multiple Choice

Steven used to spend only 1 hour in the gym 3 times a week,but recently he has been spending 3 hours a day 7 days a week working out.He has noticed that his back is chronically in pain.Even so,as soon as Steven stops a workout,he starts thinking about what he did not accomplish.This is an example of what type of behavior?

A) habit building
B) addictive
C) impulse control
D) tolerant