What it lets you do
- Sitting through eight hours at a desk and standing up at 6pm without wincing.
- Picking something heavy up off the floor and putting it back down again.
- Carrying a suitcase up a flight of stairs and walking normally at the top.
Back to the muscle map
Lower back
The lower back: the pillar that keeps your spine upright under load.
- 0
- Primary muscle
- 10
- Secondary muscle
Your lower back. The two columns running up either side of your spine that hold you upright all day without you ever thinking about it.
Where you feel it
A wide, dull tightness in the strip just above your hips. It should feel like pressure spread across the whole area. If it narrows into one sharp point, stop the set and check your position.
If you skip it
Lifting stops feeling safe. You hesitate before you pick things up, then you start asking someone else to, and the muscle gets weaker for the lack of use.
Anatomy and function
The lower back is dominated by the erector spinae, a group of long muscles that run along both sides of the spine. In the lumbar region they extend the spine, resist rounding under load and help control side bending. Deeper still, the multifidus muscles stabilise each vertebra individually.
These muscles work isometrically in almost every standing exercise, from squats to overhead presses, and they are the primary movers in back extensions and good mornings. A strong, well-conditioned lower back is one of the best protections against the pain that so many desk-bound clients experience.
How to train it
The volume and frequency below are programming starting points for the lower back, to be adjusted to each person's level and recovery.
- Rep ranges
- 8-15 reps on extensions and good mornings; 20-60 second holds on bird dogs and planks
- Frequency
- 2 sessions per week of direct work, plus what compound lifts already provide
Key movement patterns
- Hip hinge (Romanian deadlift, good morning)
- Back extension on a 45-degree or GHD bench
- Bird dog and dead bug for control
- Bracing under squats and deadlifts
Common mistakes
- 01
Hyper-extending at the top of back extensions instead of stopping at a neutral spine.
- 02
Rounding the lower back on deadlifts and rows because the load is too heavy.
- 03
Training the lower back to failure the day before a heavy squat or deadlift session.
- 04
Avoiding lower-back work entirely after an episode of pain, which usually leaves it weaker.
Exercises for this muscle
10 matching exercises
This muscle shares an exercise category with the closest functional group.
Secondary muscle10
MET 3.5
Elbow to hand plank
MET 3.5
Flutter Kicks
MET 4
High Plank with Opposite Arm and Leg Lift
MET 3
Lying Leg Circles – Double Leg
MET 3
Bird Dog – Elbow to Knee
MET 6
Deadlift
MET 5.5
Goblet Good Morning – Dumbbell
MET 5.5
Split-Stance Deadlift
MET 5
Reverse Grip Barbell Row
MET 7.5
Dumbbell Snatch
Frequently asked questions
Is it safe to train the lower back if it sometimes hurts?
For most people with non-specific back pain, gradual strengthening is one of the most effective approaches. Start with bird dogs, bodyweight back extensions and light hinges, and progress slowly. Persistent or radiating pain should be assessed by a health professional.
Do deadlifts work the lower back?
Yes. The erector spinae hold the spine in position through the entire lift. Romanian deadlifts and good mornings place even more emphasis on the lower back and hamstrings.
How do I know if my back is rounding?
Film your sets from the side. The lower back should keep the same neutral curve from start to finish. If it changes shape as the weight rises, lighten the load and work on bracing.
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