Fitness Tip: Add more work to each rep, and increase the efficiency of your workout by increasing the range of motion: squat deeper, raise the step ups, etc.

Fitness Tip: By sliding your shoulder blades down and back before an exercise, you can improve your results and protect yourself from injury.

Fitness Tip: Trade your machine exercises for dumbbells, barbells and medicine balls in order to build strength in ways more specific to your body.

Fitness Tip: Do planks to brace your core muscles before every exercise to keep your back healthy, steady your balance and maintain a rigid body position.

Fitness Tip: Do 15 to 20 minutes of interval training. This can burn as many calories as an hour of traditional, steady-state cardio.