22. Walking lunges
Keep your head up and back straight throughout the exercise. Never allow your back to round. Your goal is 3 sets of 20 reps with 30-second rest.
1. Begin standing with your feet shoulder width apart and your hands on your hips.
2. Step forward with one leg and descend until your rear knee nearly touches the ground.
3. Drive through the heel of your lead foot, raise yourself back up and step forward with your rear foot.