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Lower Back Exercises to Avoid? What to Change Instead

Lists of lower back exercises to avoid usually name the same suspects: sit-ups, toe touches, deadlifts, twisting, anything that bends your spine. The research does not support a single banned list. What it supports is adjusting the dose of whatever bothers you, and judging the change by how your back responds the next day.

I had low back pain for about ten years. I have no medical credentials. This page covers what the evidence says about harm from exercise, what to change when something flares you, and the one sign that means stop.

No exercise is harmful for everyone

Exercise has guideline support for chronic low back pain in general, from WHO's 2023 guideline and the American College of Physicians 2017 guideline. The 2021 Cochrane review by Hayden and colleagues (249 trials) found exercise probably reduces pain compared with no treatment, usual care or placebo, with a modest average benefit.

The same review looked at harms. In trials that reported adverse effects, they were mostly minor, such as muscle soreness, and they were reported in a similar share of exercise groups (33%) and comparison groups (29%). The Cochrane review of yoga found the same kind of pattern: yoga brought more adverse events than no exercise, mostly more back pain, and about the same as other exercise.

So any new exercise can make your back sorer for a while, and some movements will bother you more than others. That is information about your current tolerance. It does not make the movement dangerous for every back. The hurt versus harm page explains why soreness and damage are different things.

Two myths: never bend, always brace

Never bend your back

The advice to keep your back straight when lifting is everywhere. A 2020 systematic review by Saraceni and colleagues asked whether lumbar flexion during lifting is a risk factor for low back pain. It found low-quality evidence that it is not: most of the included studies (9 of 11) reported no significant difference in lumbar flexion during lifting between people with and without back pain. The evidence is thin, and it does not mean any load is fine in any position. It does mean that, in that review, a rounded back while lifting was not shown to raise the risk of low back pain.

In the bench program I use, the rep from Stage 2 on lets your back round on the way down and straighten as you come up. You move your spine, rather than holding it stiff and folding only at the hips.

Always brace your core

Motor control exercise, which trains the deep trunk muscles to switch on, is a common reason people learn to brace before every movement. A Cochrane review of 29 trials found motor control exercise gave similar results to other forms of exercise, with no clear advantage. Bracing can help some people feel steadier under load, and it is one option among several. Nothing in these reviews says you need to hold your trunk rigid all day.

The fear-avoidance page covers how avoiding movement can keep pain going. The back extensions hurt my lower back page covers one exercise in particular.

What to change when an exercise flares you

Before dropping a movement, try changing one thing about it. Change one at a time so you can tell which one mattered.

1. Dose: fewer reps, fewer sets, or shorter holds.
2. Range: stop short of the point where it bites, then grow the range in small steps.
3. Speed: slow down, and pause at the hardest point instead of bouncing through it.
4. Load: drop the weight, or go back to body weight.
5. Frequency: more rest days between sessions of that movement.

Then hold the new dose until it feels routine before adding anything back. If you have dropped a movement entirely, reintroduce it at a small dose rather than at the level that flared you. The flare-up plan covers the days when nothing feels right, and training with lower back pain covers gym lifts.

The next-day test

How a movement feels during a set is a weak guide. Some ache while you train is common. A better reading comes the next morning, compared with your usual day:

• Worse than usual: ease it next time.
• About the same: repeat it, unless the previous training day's next-morning check-in was also at or below your usual, and neither was higher than the pain you logged before that session. Then take the small step up.
• Better than usual: a small step up is reasonable.

This is a pacing rule, not a diagnostic test. It tells you whether to go up or down. It cannot tell you why your back hurts. One worse morning after a new exercise is common, and a pattern over several sessions tells you more than any single day.

Low Back Pain Coach is built around this rule. Exercise in general has guideline support for chronic low back pain, the average benefit is modest, and this app's bench progression has not been tested in a trial.

Low Back Pain Coach is the app I built for this. It runs guided sessions on a 45-degree back-extension bench, and your next-morning pain log sets the next session. The bench is required. The first session is free, then it costs $59.99 a year or $9.99 a month, with a 7-day free trial for eligible new subscribers. The app page has the details.

When pain spreading to your legs means stop

One sign overrides the next-day test. If the pain is in your legs, or it is spreading that way during a movement, stop that exercise. Do not add load and do not keep extending. Note where the pain was and rest. If none of the warning signs below are present, use the flare-up plan and leave that work alone until your days settle.

Go to emergency care now for new numbness, tingling or change in feeling in the saddle area (groin, inner thighs, genitals or anus), new changes in sexual function, new bladder or bowel changes, new pain, tingling, numbness or weakness in both legs, leg or foot weakness that is getting worse, or back pain after a recent serious accident. See a clinician today (urgent care if you cannot get an appointment today) for other new weakness or numbness in one leg or foot, fever or chills with the back pain, new pain after a recent smaller fall or knock, unexplained weight loss or a history of cancer, pain that is rapidly getting worse, or pain that is constant at rest and worse at night, not tied to movement. The red-flag checklist has the full list.

If a particular movement keeps causing leg symptoms, or you are not sure whether something is safe for you, ask a doctor or physical therapist who can examine you. The appointment questions page has what to ask, including whether there is a reason to avoid loaded back extension work.

Common questions

The app