Trainer: Joe Giordano, Tilton Fitness in Northfield

Exercise: TRX pistol (one-leg squat)

Muscles targeted: Glutes, quads and abdominals

Equipment: TRX suspension trainer

Sets/reps: 3 sets/10 to 15 repetitions

Grasp the handles of the TRX and place your feet firmly on the ground. Lift one leg and extend frontwards. While using the TRX for balance (or "confidence"), lower the body until the knee on the opposite leg reaches a 90-degree angle. Then, press the body back up and repeat the movement.