If you don't want to hold the lunge, you can modify it by doing reverse lunges with a single twist (instead of both sides). See directions below for how to perform this move with a medicine ball, but you can do it without weight as well.
- Stand with your feet hip distance apart. Hold a five- to 10-pound medicine ball with your arms outstretched in front of you (or close to your chest, like Alexia suggests).
- Keep your core stable, and take a large step back with your right foot, planting your foot and then lowering your body until both legs are bent in right angles.
- As you sink into the lunge, twist your torso to the left.
- Bring your torso back to centre, and exhale as you straighten your legs. Bring your feet back together, then step back on your left leg, twisting to the right.
- This completes one rep.