Sleeping with a thrown out back is possible if you take pressure off your lower spine with the right position, strategic pillow placement, and a few pain-management steps before you get into bed. The first night is usually the hardest, but small adjustments can make a real difference in how much rest you actually get.
The Two Best Sleeping Positions
Your goal is to keep your spine in a neutral, relaxed alignment. Two positions do this well.
On your back with a pillow under your knees. This takes the pull off your lower back muscles and preserves the natural curve of your lumbar spine. A standard bed pillow works, though a thicker one (or a rolled-up blanket) may feel better if your spasms are intense. Let your legs relax completely into the pillow rather than holding tension in them.
On your side with a pillow between your knees. Draw your legs up slightly toward your chest so you’re in a loose fetal position. The pillow between your knees keeps your hips, pelvis, and spine aligned, which prevents your top leg from pulling your spine into a twist. A firmer pillow holds its shape better here than a soft one that compresses flat overnight.
Sleeping on your stomach is the one position to avoid. It forces your lower back into an exaggerated arch and rotates your neck, both of which can make muscle spasms worse.
Getting In and Out of Bed Safely
The moment most people re-aggravate a thrown out back is the transition into or out of bed. The log roll technique keeps your torso from bending or twisting during this movement.
To get in: stand with the backs of your legs touching the bed. Reach your hands behind you, bend your knees, and lower yourself to sit on the edge. Then, keeping your trunk completely straight (imagine it’s a plank of wood), use your arms to lower your upper body to the side while letting your legs rise onto the bed at the same time. The key is that your upper body goes down and your legs come up as one unit, so your spine stays in a single straight line. Once you’re on your side, you can gently roll onto your back if that’s your preferred position.
To get out: reverse the process. Roll onto your side facing the edge of the bed. Use your arms to push your upper body up while lowering your legs to the floor, keeping your trunk rigid the whole time. Move slowly. Rushing is what causes the sudden twist that sends your back into another spasm.
Ice, Heat, and Timing Before Bed
What you do in the 30 to 60 minutes before bed can determine how quickly you fall asleep. If your back injury happened today or yesterday, cold is your best option. Wrap a cold pack (or a bag of frozen vegetables) in a towel and apply it to the painful area for no more than 20 minutes. Cold reduces inflammation, dulls pain signals, and calms muscle spasms. Never put ice directly on skin.
If the injury is more than two days old and the initial swelling has gone down, heat tends to work better. A warm towel, heating pad on a low setting, or a hot shower before bed can raise your pain threshold and loosen tight muscles. Moist heat, like a damp towel warmed in the microwave, penetrates more effectively than dry heat.
You can also try alternating: ice for 15 to 20 minutes, then a break, then heat for 15 to 20 minutes, finishing with whichever one feels most relieving right before you lie down.
Over-the-Counter Pain Relief at Bedtime
An anti-inflammatory like ibuprofen or naproxen can reduce both pain and the swelling around irritated muscles and joints. Taking a dose about 30 minutes before bed gives it time to start working as you settle in. Naproxen lasts longer (up to 12 hours per dose), which makes it a reasonable choice for getting through the night without waking up in pain.
That said, a large review of over 6,000 people with spine-related pain found that anti-inflammatories provided only modest relief compared to a placebo, and people taking them were two and a half times more likely to experience side effects like stomach irritation. They’re worth trying for a rough night, but they won’t eliminate the pain entirely.
Your Mattress Matters More Than You Think
If your mattress is very firm, it may actually be making things worse. A survey of 268 people with low back pain found that those sleeping on very hard mattresses reported the poorest sleep quality. Medium-firm mattresses performed just as well as firm ones, so the old advice to sleep on the hardest surface possible doesn’t hold up. If your mattress feels like a board, try placing a thin comforter or mattress topper on it for some cushioning. If it sags in the middle, sliding a folded blanket under your sheet at hip level can provide temporary support until you recover.
Keep Moving During the Day
It’s tempting to spend the whole day in bed when your back is locked up, but that can actually slow your recovery. Research consistently shows that bed rest is not effective for acute low back pain and may delay healing. Staying gently active, even just walking around your home, leads to a faster return to normal activity, less chronic disability, and fewer recurring problems.
This doesn’t mean pushing through sharp pain or doing heavy lifting. It means getting up every hour or two, taking short walks, and doing gentle movements that keep blood flowing to the injured muscles. The better you move during the day, the less stiff and spasmed your back will feel when bedtime comes.
Signs That Need Immediate Attention
Most thrown out backs are painful but not dangerous. They involve muscle strains or spasms that improve within a few days to a couple of weeks. However, a small number of back injuries affect the nerves in the lower spine, and these require urgent medical care. Watch for weakness or numbness spreading down one or both legs, loss of bladder or bowel control, or numbness in the area where you’d sit on a saddle (inner thighs and groin). These symptoms can indicate pressure on the bundle of nerves at the base of the spine, and waiting to address them can lead to lasting damage.