Dumbbell lunges and high knees

1. Stand upright, back straight, a dumbbell in each hand.
2. Take a big step forward with your right leg and slowly lower your bust (keeping the torso upright) until you have your left knee close to the ground. Your right leg should form a 90-degree angle and your right knee should not go forward beyond your toes.
3. Hold this position for one second then push on your right leg to return to a standing position and raise your left knee once you're there.

Obviously, the instructions are the same for the left leg.