Butt - Power lunges

Stand with your arms loose by your sides, with a dumbbell in each hand.

Step forwards about one stride length from the back foot.

As you do so, lower your body down, then spring back to the starting position, pushing through with the heel of your front foot.

- Keep your back straight during the movement.

- Make sure that your knee does not bend further forwards than your toes.

- Do not allow your body to waver.