Stimulus-Response Theory (SRT)- B.F. Skinner 1953

SRT believes that reinforcement during or after the exercise experience is the key to future exercise behavior. The four reinforcers are positive, negative, punishment, and extinction. Positive exercise reinforcement can be intrinsic, such as feeling good about one’s body, feelings of accomplishment after a workout, or good sensations during exercise. Extrinsic positive reinforcement may include verbal praise, compliments from friends, t-shirts for excellent attendance, etc.. Of course, punishment and extinction (withdrawal of reinforcers) would lead to less exercise participation. Although, one punishment/negative idea to increase exercise participation is a contract with the stipulation that poor exercise attendance will result in a $25 donation to your least favorite organization, such as the Trump re-election campaign.