In this week's issue of PEOPLE, on newsstands Friday, the '80s icon shares what it takes to maintain his fit physique — and rock hard abs — at ... the road we’re Planet Fitness whores.

This 15-minute abs workout from YouTube fitness trainer Mizi is a great example of how to train your core without hitting the floor. Not only do you stay standing during the session, it also doesn ...

The versatile Chestnut, 56, leads with intellect, charm and six-pack abs as Dr. John Watson ... But his 24 Hour Fitness membership, for example, is perfect for that 3 a.m. workout.

The versatile Chestnut, 56, leads with intellect, charm and six-pack abs as Dr ... But his 24 Hour Fitness membership, for example, is perfect for that 3 a.m. workout. "Being at the gym is part of my ...