Back Extension
- Beginner
- Bodyweight
The back extension is performed on a 45-degree bench with the hip pad set just below the pelvis and both ankles locked under the roller. From that position the torso lowers by folding at the hips, then returns until the body forms one straight line from head to heels. The spinal erectors hold the spine steady through the whole range while the glutes and hamstrings produce the hip extension. Because the load is bodyweight and the range is bounded by the bench, it is an easy way to train the posterior chain.
How to do the Back Extension
- Set the hip pad of a 45-degree back extension bench just below your pelvis.
- Step onto the platform and lock both ankles under the roller pad with your legs straight.
- Cross your arms over your chest, brace your abdominals, and align your head, spine and hips.
- Hinge at the hips and lower your torso until you feel the hamstrings lengthen.
- Squeeze the glutes and extend the hips until your body forms a straight line.
- Hold the top position briefly, lower under control, and repeat for the prescribed reps.
Muscles worked
- Primary:
- Lower back
- Secondary:
- Glutes and Hamstrings
Why train it
- Strengthens hip extension and spinal erector endurance with no external load required.
- Teaches the hinge pattern in a supported position before a barbell is introduced.
- Scales with tempo, pause length or a held plate without changing the setup.
Common mistakes
- Arching well past a straight line at the top, which loads the lumbar spine instead of the hips.
- Setting the hip pad too high, which blocks hip flexion and pushes the movement into the lower back.
- Swinging through reps with momentum, which removes tension from the glutes and hamstrings.
- Throwing the head back or tucking the chin hard, which breaks the neutral line the exercise trains.
Frequently asked questions
What muscles does the Back Extension work?
The Back Extension trains the lower back as the main target. Expect the glutes and hamstrings to take some of the load as well.
What equipment do I need for the Back Extension?
None. The Back Extension is a bodyweight movement, so your own weight is the resistance and floor space is the only requirement.
Is the Back Extension suitable for beginners?
Yes. The Back Extension is rated beginner: you are the load, so there is no weight to get wrong. Add reps or time only once the position holds from the first of them to the last.
Can I do the Back Extension at home?
Yes, anywhere. There is nothing to buy and nothing to set up, which makes the Back Extension one of the movements worth keeping for days you never reach a gym.
How many sets and reps of the Back Extension should I do?
Three to four sets taken within a rep or two of failure. There is no weight to add here, so progress by slowing the lowering phase, pausing at the hardest point, or moving to a harder variation once you can clear 15 clean reps.
What are good alternatives to the Back Extension?
Dumbbell Back Extension, B-stance Back Extension, and Bird Dog train the same primary muscles as the Back Extension. Pick whichever one matches the equipment in front of you.