Resistance bands with pulleys can add another dimension to your workouts. The multiple levels of tension allow you to progressively overload your muscles, said Chris Weigel, NSCA-certified personal trainer and owner of Clairevista Vitality Club in Dallas, which is a fast track to muscle gains. Personal trainer Rachel MacPherson, ACE, recommended the Fitness Insanity Resistance Band Set ($24), which includes an anchor so you can attach a band to a door and use it like a cable machine at the gym. The pulley also makes it easy to use these bands for dumbbell exercises like biceps curls, shoulder presses, triceps extensions, chest presses, hamstring curls, donkey kicks, and more.