Tabata 2, Exercise 2: Hip Hinge Start by sitting upright in your chair with your hands down by your sides or resting on your lap. Lean forward at the hips, keeping your back as straight as possible and your belly button pulled in toward your spine. Pull yourself up to turn to your starting position in your chair. This counts as one rep. Repeat for 20 seconds, then take a 10-second break. Image Source: Courtesy of Matthew Henton