Most pulled lower back muscles heal fully within about two weeks with the right care at home. The key is managing pain and inflammation in the first few days, then gradually reintroducing movement to rebuild strength and flexibility. Here’s how to handle each phase.
What Happens When You Pull a Back Muscle
A pulled muscle in the lower back means some of the muscle fibers have been stretched beyond their limit or partially torn. This triggers inflammation, which causes the sharp pain, stiffness, and muscle spasms you feel. The lower back is especially vulnerable because it bears most of your upper body weight and absorbs force during bending, twisting, and lifting.
The pain typically hits one side of the lower back and gets worse with movement. You might notice it’s hard to stand up straight or that bending forward is particularly painful. Muscle spasms, where the injured area locks up involuntarily, are your body’s way of splinting the area to prevent further damage.
The First 48 Hours: Ice and Rest
The first two days are about controlling swelling. Apply a cold pack wrapped in a thin cloth for no more than 20 minutes at a time, four to eight times per day. Cold narrows blood vessels in the area, which limits swelling and dulls nerve signals carrying pain. Don’t leave ice on longer than 20 minutes, as this can damage the skin.
Rest during this phase, but don’t stay in bed all day. Complete bed rest for more than a day or two actually slows recovery by weakening the muscles around the injury. Instead, avoid the specific movements that caused the injury and anything that significantly spikes your pain. Light walking around the house is fine and helps maintain blood flow to the healing tissue.
Over-the-counter anti-inflammatory medications help reduce both pain and swelling. Ibuprofen at 200 to 400 mg every six to eight hours (up to 1,200 mg per day) or naproxen at 250 mg every six to eight hours (up to 1,000 mg per day) are both effective. Stick to the lower doses, as higher amounts increase the risk of stomach irritation and other side effects without adding much benefit for most people.
After Day Two: Switch to Heat
Once the initial inflammation settles, usually after about two days, switch from ice to heat. A heating pad, warm towel, or warm bath relaxes tight muscles, increases blood flow, and helps the tissue repair itself. Use heat for 15 to 20 minutes at a time. Many people find heat especially helpful in the morning when stiffness is at its worst.
Some people alternate heat and ice during this middle phase if the area still feels swollen but also stiff. There’s no strict rule here. If heat makes the pain worse or the area feels hot and puffy, go back to cold for another day.
Sleeping Without Making It Worse
Nighttime is often the hardest part of a back strain because lying in the wrong position puts sustained pressure on the injured muscle. A few pillow adjustments make a significant difference.
- Side sleepers: Draw your knees up slightly toward your chest and place a pillow between your legs. This keeps your spine, pelvis, and hips aligned so the lower back isn’t twisted all night.
- Back sleepers: Place a pillow under your knees to take tension off the lower back muscles. A small rolled towel under your waist adds extra support if you still feel pressure.
- Stomach sleepers: This position is the hardest on a strained back. If you can’t sleep any other way, place a pillow under your hips and lower stomach to reduce the arch in your spine.
Gentle Movement and Core Activation
Starting around day three or four, begin incorporating gentle stretches and movements. The goal isn’t to push through pain but to keep the muscles from tightening up and losing flexibility during recovery. Pelvic tilts, where you lie on your back with knees bent and gently flatten your lower back against the floor, are a good starting point. Knee-to-chest stretches, pulling one knee at a time toward your chest while lying down, help loosen the muscles without loading them.
As pain decreases over the first week, focus on activating the deep core muscles that stabilize your spine. The most important of these wraps around your midsection horizontally, like a built-in back support belt. When this muscle is weak or not firing properly, it contributes to lower back instability and recurring pain. You can activate it by lying on your back, placing your fingers just inside your hip bones, and gently drawing your belly button toward your spine without holding your breath. You should feel a subtle tightening under your fingertips.
Build from there to bird-dogs (extending opposite arm and leg from a hands-and-knees position) and bridges (lifting your hips off the floor while lying on your back with knees bent). These exercises strengthen the muscles that protect the lower back without putting direct stress on the injured area. Aim for controlled, slow repetitions rather than high volume.
Typical Recovery Timeline
Most people with a pulled lower back muscle recover fully within two weeks. The sharpest pain usually fades in the first three to five days, followed by a period of lingering stiffness and soreness that gradually improves. If your symptoms haven’t improved after two weeks, that’s a sign you may need professional treatment such as physical therapy or further evaluation.
Mild strains where you can still walk and function, just with discomfort, tend to resolve on the faster end. More severe strains where standing is difficult or spasms are frequent can take the full two weeks or slightly longer. Returning to heavy exercise or physical labor too early is the most common reason people re-injure the same spot, so ease back into activity even after the pain is gone.
Signs It’s Something More Serious
A simple muscle strain doesn’t cause numbness, tingling, or problems with bladder or bowel control. If you experience any of the following, the issue may involve the nerves in your lower spine rather than just a muscle, and you should get to an emergency room:
- Numbness or tingling in your inner thighs, buttocks, or backs of your legs
- Difficulty urinating or having a bowel movement, or losing control of either
- Leg weakness that makes it hard to walk or causes your foot to drag
- Sudden severe back pain combined with any of the above symptoms
These can indicate compression of the nerve bundle at the base of the spine, which requires urgent treatment to prevent permanent damage.
Preventing the Next One
Once you’ve pulled a lower back muscle, the area is more vulnerable to re-injury for several weeks after the pain disappears, because the repaired tissue isn’t yet as strong as the original. Continuing your core exercises three to four times per week after recovery is the single most effective way to protect against another strain.
Lifting technique matters enormously. The mistake most people make is bending at the waist and rounding the back, which concentrates force on the lower spine. Instead, hinge at the hips: push your hips back as if closing a car door with your backside, keep your back flat from neck to tailbone, and let your glutes and hips power the lift. These are the strongest muscle groups in your body, and using them properly keeps your spine in a neutral, protected position. This applies whether you’re picking up a barbell, a laundry basket, or a toddler.
Prolonged sitting is another common trigger. If you work at a desk, stand up and move for a minute or two every 30 to 45 minutes. Sitting compresses the lower back discs and allows the stabilizing muscles to deactivate, which leaves you vulnerable when you suddenly stand and twist to grab something.