All posts

Is it OK to work out when you're sore?

A shirtless man with a back tattoo pressing on a sore spot at the top of his back.

Usually, yes. Mild soreness a day or two after a workout is normal, especially after a new exercise or a break, and most people can train through it. If a muscle is very sore, you can train other muscles that day, go lighter, or rest. Soreness also isn't a sign that a workout worked.

What muscle soreness is

The ache you feel a day or two after a hard or new workout is called DOMS, short for delayed onset muscle soreness. A 2019 review found it usually starts 12 to 24 hours after an unfamiliar workout, peaks between 24 and 72 hours, and is gone within 5 to 7 days.

The lowering part of a lift, called the eccentric, causes the most soreness. That's why the first week of a new program, a new exercise, or your first workout back after a break tends to leave you the most sore.

Can you work out when you're sore?

For mild soreness, most people train as normal and feel it ease once they warm up. Soreness can cost you some performance, though. A 2024 review of 20 studies found that sprint speed and quick changes of direction stayed lower for up to 3 days after hard workouts built to leave muscles sore.

If a muscle is very sore, you have a few options:

  • Train different muscles that day. An upper lower or push pull legs split does this by design. See Push pull legs vs upper lower vs full body.
  • Keep the workout but go lighter, with fewer sets or less weight.
  • Take a rest day or do some easy cardio instead.

Moving a session doesn't cost you much. A 2019 meta-analysis found that when weekly sets were the same, training a muscle more or less often made little difference to muscle growth, and the American College of Sports Medicine's 2026 position stand reached the same conclusion. What matters most is the work you get in over the week. See How many sets per week to build muscle?

We couldn't find good research from recent years on whether training a sore muscle slows its recovery, so we're not making a claim either way.

Does soreness mean a good workout?

No. A 2018 review found that training that's easier on your muscles in the days after still builds about the same muscle and strength as training that leaves them beat up. It also found that the size gains in your first few sessions are mostly swelling, not new muscle. The 2019 review found that how sore you feel doesn't line up well with what's actually happening in the muscle.

So not being sore doesn't mean your workout didn't work. A better sign is whether your weights or reps go up over the weeks. See Progressive overload explained.

Why soreness fades as you keep training

Your muscles adapt to a workout after doing it once, so the same workout hurts less the next time. Researchers call this the repeated bout effect. A 2023 meta-analysis in untrained people found that one earlier, lighter session of the same kind of exercise cut soreness a lot in the days after the next hard one.

The protection doesn't last forever. A 2026 trial in young men found it was still clear 3 and 6 weeks after the first workout and gone by 12 weeks. That's why coming back after a few months off can leave you as sore as your first week. Starting with lighter weights for the first week or two of a new program can take the edge off. Our beginner gym workout plan starts this way.

What helps soreness

A 2018 meta-analysis of 99 studies compared common recovery methods. Several lowered soreness, and a few did nothing:

MethodEffect on soreness
MassageLargest drop
Active recovery (easy movement)Moderate drop
Compression clothingModerate drop
Cold therapy and cold waterSmall drop
StretchingNo change
  • Foam rolling: a 2019 meta-analysis found it eased soreness a little after exercise, but the authors called the effects minor.
  • Stretching: a 2021 meta-analysis found that stretching after exercise didn't reduce soreness at 24, 48 or 72 hours, or help strength come back.
  • Cold water: a 2023 meta-analysis found that regular cold-water baths after lifting reduced strength gains over time, in studies made up mostly of men. An occasional ice bath for soreness is different from one after every workout.

When it's more than soreness

Normal soreness is a dull ache in the muscles you trained that fades over a few days. Sharp pain, swelling, pain in a joint, or pain that keeps getting worse is different. If your elbows, knees or shoulders ache going into workouts, see What is a deload week? After an extreme workout, dark or cola-colored urine with severe muscle pain and weakness can be a sign of a rare condition called rhabdomyolysis, and that needs a doctor right away.

The Build a workout routine and Build a template cards in the Somatics AI tab, each with Somi.
Build one workout, or a full week split across your training days.
In SomaticsIf you need a full workout routine for the week, tap on "Build a workout routine" and answer a few questions. Somatics will build one for you. If you only need one workout, tap on "Build a template" instead.
Download on the App Store

Common questions

Is it bad if I'm not sore after a workout?

No. Soreness goes down as your muscles get used to your training, and the 2018 review found that workouts that are easier on your muscles build about the same muscle. Your weights and reps going up over time are a better sign of progress.

How long does muscle soreness last?

Usually a few days. It tends to peak 1 to 3 days after a workout and is gone within 5 to 7 days.

Is it OK to do cardio when I'm sore?

Yes, easy cardio is fine. In the 2018 meta-analysis, active recovery like light cycling or walking lowered soreness.

Why am I so sore after taking time off?

The protection your muscles build against soreness wears off. In the 2026 trial, it was gone 12 weeks after the first workout, so your first sessions back can feel like starting over.

Sources

General information, not medical advice.

Start tracking
with Somatics

Download on the App Store

More from the blog

Body recomposition: can you lose fat and build muscle at the same time?

Who can lose fat and build muscle at the same time, how big a deficit still works, and how much protein and training it takes.

How long does it take to lose muscle if you stop working out?

What a week, a month or a few months off does to your muscle and strength, and how quickly both come back.