Got Half an Hour? Try This Heart-Pumping, Lower-Body Dumbbell Workout

• Stand with your feet wide, pointing your toes out toward the corners of the room while holding a pair of dumbbells in front of your chest or down in front of you.
• Bend your knees, and begin lowering your hips down toward the floor. At the end of the movement, your thighs will be parallel with the floor.
• Keep your chest up throughout the movement and your weight in your heels.
• Push through your heels to straighten the legs, moving back to the starting position. Squeeze your glutes when you reach the top of the move.
• This counts as one rep. Do 15 reps.

Rest for 60 seconds, then repeat this circuit two more times. Take a 90-second break before moving to circuit three.