Back Extension
The lower-back and glute builder — bulletproofs the spine most desk jobs neglect.
Setup
- Hips on the pad, pad edge just below the hip bone, ankles hooked.
- Arms crossed on the chest or hands at the temples.
How To Do It
- Hinge down at the hips until you feel the hamstrings load.
- Drive back up by squeezing the glutes, stopping in line with the legs.
- Hold the top for a beat — do not throw into extension.
Breathing
Inhale down, exhale up.
Common Mistakes
- Hyperextending at the top and cranking the lower back.
- Turning it into a spinal curl instead of a hip hinge.
Programming It
Three sets of 10-20. Bodyweight is plenty until the position is automatic.
Why This Exercise Works
Despite the name this is a hip exercise for most people. If the spine stays neutral and the movement comes from the hips, it is a hamstring and glute builder with the back along for the ride. Let the spine round and unround instead and it becomes a spinal-erector exercise — useful, but a different one, and much less forgiving under load.
Where You Should Feel It
Glutes and hamstrings if you hinge from the hips, spinal erectors if you round and unround. Both are valid, but you should know which one you are doing. A pinching lower back means you are hyperextending at the top.
Where It Fits in a Program
The lower-back and glute builder — bulletproofs the spine most desk jobs neglect. Slot it after the heavy work — it adds volume without stealing from anything.
Progressing and Regressing It
To progress the back extension: hold a plate at the chest, or pause two seconds at the top. To regress it: reduce the range, and cross the arms rather than holding weight.
Who It's For
Anyone who sits all day, and anyone whose deadlift lower back gives out before their legs do. It is one of the few ways to train the back of the body with almost no spinal compression.
Equipment and Substitutions
The version shown uses a hyperextension bench. The machine buys you stability, not a different muscle. Anything below that loads the same direction will build the same thing.
Related Exercises
- Reverse Hyper — Glutes, Hamstrings, Lower Back
- Band Good Morning — Hamstrings, Glutes, Lower Back
- Good Morning — Hamstrings, Glutes, Lower Back
- Single-Leg Hip Thrust — Glutes, Hamstrings
- Superman Hold — Lower Back, Glutes
- Band Deadlift — Hamstrings, Glutes, Back
- Single-Leg Glute Bridge — Glutes, Hamstrings
- Glute Bridge — Glutes, Hamstrings, Core
Common Questions
What muscles does the back extension work?
The back extension primarily trains the lower back, glutes, hamstrings.
How many sets and reps should I do?
Three sets of 10-20. Bodyweight is plenty until the position is automatic.
What are the most common back extension mistakes?
Most often: hyperextending at the top and cranking the lower back; turning it into a spinal curl instead of a hip hinge.
Do I need a hyperextension bench to do this?
This version uses a hyperextension bench, and it trains the lower back, glutes, hamstrings. No machine? The free-weight versions below train the same muscles and ask more of your balance, which is a fair trade in both directions.
Is this safe if I have an existing injury?
Hips and lower back carry the back extension, so an existing back issue is the one to respect. Reproducing your familiar pain is the signal to stop; normal training fatigue is not. Not medical advice.