Reps: 15 on each leg
How to do it: Stand with your feet together, left heel lifted, holding dumbbells. Step your left leg back and lower into a deep lunge, reaching your arms down to the ground on either side of your right foot. Press through your right foot to stand back up and return to the start position.
Form tip: Keep your front knee behind or in line with your toes as you lunge, and try not to round your back too much as you reach to the ground.
