Set up with feet under the hips, shoulders pulled down and back and belly braced. Take a big step back, keeping a slight forward lean with the chest to target posterior chain, and not quads. Touch back knee to ground as you keep front knee tracking over the toes. To finish, bring the foot back to the start position and be sure to stand tall and extend hips all the way at the top. If adding weight, you unhold weights at your sides or on the shoulders.