Dumbbell Lunge + Pushup + Core Row

This combination is called a complex, but its actually quite simple. You’ll complete a set (10 reps) of one exercise, then move to the next exercise in the complex. Since each exercise begins in a similar position—standing with dumbbells, for instance—you don’t waste time setting up between exercises. The result: You accomplish more work in a shorter time, so your heart rate stays elevated, and you burn a lot of calories.

Stand holding dumbbells at your sides.

1. Stride forward with your left leg until your left thigh is parallel to the floor.
2. Then press up. Alternate legs and perform 10 lunges with each leg. Next, get into pushup position with your hands resting on the dumbbells and placed beneath your shoulders, your palms facing each other.
3. Do 10 pushups.
4. From the pushup position (arms straight), pull one dumbbell off the floor and toward your body with your right arm until your elbow is higher than your back.
5. Return the weight to the floor and repeat with your left arm. Do 10 with each arm.