Jack Has Never Enjoyed Going to the Gym to Work

Jack has never enjoyed going to the gym to work out, but he realizes that if he doesn't get some kind of exercise, there will be negative consequences. After trying a few different activities, he discovered that he enjoys jogging around campus. It gives him the opportunity to spend some time alone, clear his head, and enjoy nature. How often should Jack go jogging if he wants to get the benefits of exercise?

A) once or twice a week
B) about three times a week
C) four or five times a week
D) every day