This Dumbbell Circuit Workout Will Challenge Your Whole Body

• Holding the weights at your shoulders with your palms facing out, take a big step backward with your left foot. Press the weights up to the ceiling.
• Lower the weight to your shoulders as you bend your knees to descend into a lunge, pausing when your knees form 90-degree angles (or as low as is comfortable for you).
• Push into the front foot to straighten both legs and press the weights back toward the ceiling. That's one rep.
• Do 10 reps, then repeat on the other side.

Take a one-minute rest, and repeat circuit two. Then, rest for two minutes before moving on to circuit three.