Jennings also said that "iso squat holds are a key intro to bodyweight squats while helping to engage our quads, glutes, hamstrings, and core."
- Stand with your feet shoulder-width apart or slightly wider and with your chest tall. Extend your hands straight out in front of you, hold them at chest level, or place them behind your head.
- Bend at your knees and hips and press your weight back into your heels with your knees over your ankles, pushing your butt out like you're sitting onto a chair. Keep your chest lifted, and do not let your lower back round.
- Squat down as low as you can, still keeping your head and chest lifted.
- Jennings said to hold for 15 seconds before standing back up.