When your body is sore after exercise or physical activity, the most effective things you can do are stay lightly active, apply the right temperature therapy, eat enough protein, and sleep well. Most soreness peaks one to three days after the activity that caused it, then resolves on its own within about five days. But the steps you take during that window can meaningfully reduce how much it hurts and how quickly you bounce back.
Why Your Body Gets Sore
The soreness you feel a day or two after a workout is called delayed onset muscle soreness, or DOMS. Your muscles are made of thousands of tiny fibers that stretch and contract as you move. When you push harder than usual, some of those fibers develop microscopic tears. Your body repairs those tears and builds the muscle back stronger, but the repair process itself triggers inflammation and pain.
Certain types of movement cause more soreness than others. Exercises where you tense a muscle while it’s lengthening (think: lowering a heavy weight, walking downhill, or the downward phase of a squat) are the biggest culprits. This is why your first day back after a break can leave you barely able to sit down two days later. The soreness doesn’t hit during the workout. It builds over several hours and peaks between 24 and 72 hours afterward.
Keep Moving at Low Intensity
The single best thing you can do for sore muscles is light movement. It sounds counterintuitive when everything hurts, but active recovery increases blood circulation, which removes waste products from damaged tissue and delivers the nutrients your muscles need to rebuild. Walking, easy cycling, swimming, or using an elliptical all work. Light weightlifting at 30 to 40 percent less weight than you’d normally use counts too.
The key is keeping the effort genuinely easy. Your heart rate should be above resting but well below what you’d hit during a real workout. Think of it as moving just enough to feel loosened up, not enough to break a sweat.
Use Cold and Heat at the Right Times
Cold and heat do different things, and timing matters. If your soreness came with any visible swelling or you’re within the first 48 hours of what felt like a sharp strain, cold is the better choice. It numbs the area, reduces swelling, and limits inflammation. An ice pack wrapped in a towel for 15 to 20 minutes at a time works well.
For the dull, achy soreness that settles in a day or two after exercise, heat is more useful. It brings more blood to the area, reduces stiffness, and helps clear the chemical byproducts that accumulate when muscles work hard. A warm bath, heating pad, or hot shower directed at the sore spots can provide real relief. Just avoid heat on anything that’s actively swollen or was recently injured.
Foam Rolling Helps, but Be Consistent
Foam rolling works by increasing blood flow, reducing tissue tension, and decreasing stiffness in sore areas. Roll slowly over a tender spot for 5 to 30 seconds until you feel the tenderness start to fade, then move on. You can foam roll any muscle group daily, and the benefits compound with consistent use rather than one-off sessions.
It won’t feel pleasant on sore muscles, but the discomfort should be a “good hurt,” not sharp pain. If rolling a particular spot causes sharp or shooting pain, skip it and check in with a physical therapist.
Stretching Won’t Do Much for Soreness
This one surprises most people. A large meta-analysis in Frontiers in Physiology found that post-exercise stretching, used on its own, does not significantly reduce muscle soreness, improve strength recovery, or lower pain thresholds. The pooled data across multiple studies showed essentially no meaningful effect. DOMS involves inflammation, microtrauma, and changes in how your nervous system processes pain. Stretching works on muscles and joints but doesn’t reach those deeper pain pathways. Stretching is still valuable for flexibility over time, but don’t count on it to fix soreness you already have.
Eat Enough Protein After Exercise
Your muscles can’t repair themselves without adequate protein. Aim for 15 to 25 grams of protein within two hours after exercise. About 20 grams in that post-workout window is enough to support muscle repair. Going above 40 grams in a single sitting doesn’t appear to provide additional recovery benefit.
For your overall daily intake, active people benefit from 1.2 to 1.7 grams of protein per kilogram of body weight. For a 150-pound person, that’s roughly 82 to 116 grams spread across the day. If you’re moderately active rather than intensely training, the lower end of that range is sufficient. Good sources include chicken, fish, eggs, Greek yogurt, beans, and protein shakes if whole foods aren’t convenient.
Magnesium and Mineral Support
Magnesium plays a direct role in muscle relaxation, and clinical research shows supplementation can reduce soreness and inflammation after exercise-induced muscle damage. It helps lower lactate levels and acts as both a muscle relaxant and a mild vasodilator, improving blood flow to damaged tissue. One study found that runners who supplemented with 500 mg of magnesium daily reported less muscle soreness at 24, 48, and 72 hours after a hard effort compared to a placebo group.
There’s an important caveat: if your magnesium levels are already normal, supplementing won’t push them higher or provide extra benefit. Magnesium-rich foods like nuts, seeds, leafy greens, and whole grains are a good starting point. If your diet is light on those, a supplement may help, but more isn’t always better.
Sleep Is When Repair Actually Happens
During the first few hours of sleep, your body releases a surge of growth hormone, which is one of the primary drivers of muscle tissue repair. This release happens during deep sleep specifically, making sleep quality just as important as sleep duration. When you’re sleep-deprived, protein breakdown in your muscles increases while the building and repair processes slow down. Over time, this combination promotes muscle loss rather than recovery.
If you’re sore and skimping on sleep, you’re actively working against your body’s ability to heal. Seven to nine hours gives your system the time it needs, and going to bed at a consistent time helps you spend more of the night in the deep sleep stages where the most repair occurs.
Think Twice Before Reaching for Ibuprofen
Over-the-counter anti-inflammatory drugs like ibuprofen can take the edge off soreness, but they come with a trade-off most people don’t know about. A study from Karolinska Institutet tracked young adults doing weight training two to three times a week for eight weeks. One group took 1,200 mg of ibuprofen daily (a standard full-day dose), while another took a low dose of aspirin. After eight weeks, the ibuprofen group gained half as much muscle as the aspirin group. Strength gains were also reduced, though less dramatically.
The inflammation you feel after a workout is part of how your muscles adapt and grow. Suppressing it with regular high-dose anti-inflammatories appears to blunt that process. Using ibuprofen occasionally for severe soreness is reasonable, but relying on it after every workout, especially if you’re trying to build strength, works against your goals.
When Soreness Is a Warning Sign
Normal muscle soreness is diffuse, affects the muscles you worked, and improves gradually over three to five days. Rhabdomyolysis is a rare but serious condition where muscle fibers break down so severely that their contents leak into the bloodstream and can damage the kidneys. The symptoms can overlap with ordinary soreness, so knowing the red flags matters.
Watch for pain that’s significantly more severe than you’d expect given the workout, dark urine that looks like tea or cola, and unusual weakness or fatigue where you can’t complete tasks you’d normally handle easily. You can’t diagnose rhabdomyolysis from symptoms alone since dehydration and heat cramps cause similar feelings. A blood test measuring creatine kinase levels is the only reliable way to confirm it. If your urine turns dark after a hard workout, especially one involving a new activity or extreme heat, get it checked promptly.