This exercise is an advanced movement of the traditional walking lunge in that it places greater tension throughout your lower body, accelerating muscle strength and definition.
Hold a dumbbell in each hand at your sides with arms fully extended. Take a large step forward with your right leg. Drop into a lunge bending both knees to 90 degrees. Keep your torso upright while keeping your chest up and shoulders back. Keep your balance.
Step forward with your back leg to bring your feet together. Repeat the motion with your opposite leg, moving forward.
Take a large enough step for both of your knees to bend to 90 degrees.
Keep your back flat during the exercise to avoid injury.
Center your weight in the heel of your front foot.