Advanced movement. Use appropriate equipment, safety pins or spotters, and a load you can control. If you are unfamiliar with the movement, learn the technique before attempting the programmed intensity.
What it trains
hamstrings, spinal erectors
Also: gluteus maximus
Equipment
barbell, squat rack
Setup
Rack the bar across the upper back as for a squat and step out.
Feet about hip width, knees slightly soft.
Execution
1.Brace, then push the hips straight back and let the torso fold forward.
2.Descend until the torso approaches parallel or until the back would round.
3.Drive the hips forward to return to standing.
Breathing
Inhale at the top, hold through the fold, exhale on the way up.
Form cues
This is a hip hinge, not a spinal bend.
Keep the bar pinned to the back.
Use noticeably less load than you squat.
Common mistakes
Loading it like a squat.
Bending at the waist rather than the hips.
Letting the knees straighten completely and locking out the hamstrings early.
Safety
Set safety pins at torso height so a failed rep can be dumped forward safely.