Sore After a Workout or Actually Injured? How to Tell the Difference

You finished a challenging workout, and now your muscles are sore. But how do you know if that soreness is simply part of the recovery process or a sign that something is actually wrong?

Knowing the difference between normal muscle soreness after a workout and injury-related pain can help you make smarter decisions about when to keep moving, when to take a break, and when to seek professional guidance.

What Is Normal Muscle Soreness?

Some muscle soreness after exercise is completely normal, particularly when you try a new activity, increase the intensity of your workout, or work your muscles in a way they are not accustomed to.

This type of soreness is often called delayed onset muscle soreness (DOMS). DOMS typically develops 12 to 72 hours after exercise, rather than during the workout itself.

Common signs of normal post-workout soreness include:

• Soreness that develops hours after exercise rather than during it
• A dull, achy, or stiff feeling
• Tenderness in the muscles you recently worked
• Soreness that gradually improves over several days
• Mild discomfort that does not significantly limit your movement

You may notice DOMS in your legs after a challenging lower-body workout, for example. It is particularly common after unfamiliar or more intense exercise and activities involving eccentric muscle contractions, such as lowering a weight, running downhill, lunging, or landing from a jump.

The good news is that typical DOMS usually improves on its own as your muscles recover.

What Does Normal Muscle Soreness Feel Like?

Normal post-workout soreness tends to feel more like a dull ache, stiffness, or tenderness than a sharp or stabbing pain. It generally affects the muscles you recently exercised rather than one very specific spot.

Another helpful sign is that mild soreness may improve as you begin moving around or performing light activity.

If you have mild soreness that does not worsen with movement and does not interfere with your normal activities, you may be able to remain active while reducing the intensity of your workout.

It is also important to remember that you do not have to be sore after every workout for your workout to be effective. As your body becomes accustomed to a particular exercise routine, you may experience less soreness even as your strength and fitness improve.

When Could Workout Pain Mean an Injury?

Injury-related pain can feel different from typical muscle soreness.

Sudden, sharp, or intense pain that begins during exercise is more concerning than soreness that gradually develops after a workout.

Other signs that may indicate an injury include:

• Sharp or stabbing pain
• Pain that begins suddenly during exercise
• Swelling or bruising
• Muscle weakness
• Muscle spasms
• Limited range of motion
• Difficulty putting weight on or using the affected area
• A noticeable “pop” at the time of injury
• Pain that continues to worsen rather than improve

For example, a muscle strain may cause localized pain that begins suddenly during an activity and can be accompanied by weakness, swelling, bruising, or difficulty moving the affected area.

If pain is getting worse, significantly limiting your movement, or preventing you from performing your normal activities, it is a good idea to stop the activity and consider having the injury evaluated.

Should You Work Out When You’re Sore?

If you have mild DOMS, you may not need to completely stop exercising. Light movement, such as walking or gentle mobility exercises, may help you stay active while your muscles recover.

However, it is generally best to avoid intense exercise that heavily targets muscles that are still significantly sore.

For example, if your legs are sore after a difficult leg workout, you might choose a lighter activity, focus on mobility, or work a different muscle group while your legs recover.

Significant pain is a different story. If pain is sharp, worsening, or limiting your movement, avoid trying to “push through” it. Continuing to exercise through an injury can potentially make the problem worse or prolong your recovery.

When in doubt, listen to your body and give yourself time to recover.

How Can You Help Your Muscles Recover After a Workout?

Supporting your body between workouts can help you recover and prepare for your next training session. A few simple habits can make a difference:

• Eat a balanced diet: Protein provides the building blocks your body needs for muscle repair, while carbohydrates help replenish energy stores used during exercise.
• Stay hydrated: Replacing fluids lost through sweat is an important part of exercise recovery, particularly after longer or more intense workouts.
• Prioritize sleep: Sleep gives your body time to recover from the physical stress of exercise. Most adults should aim for approximately seven to nine hours of sleep each night.
• Keep moving: When you have normal muscle soreness, light activities such as walking or gentle movement may help reduce stiffness without putting additional stress on sore muscles.
• Progress gradually: Increasing your workout intensity, frequency, or volume too quickly can place excessive stress on your body. Give your muscles and other tissues time to adapt to changes in your training.

Ultimately, consistent nutrition, hydration, sleep, exercise progression, and recovery are more important than relying on a single recovery technique or supplement.

When Should You See a Physical Therapist?

You do not necessarily need to see a physical therapist every time you experience muscle soreness after a workout. However, persistent or recurring pain may be a sign that something needs closer attention.

Consider seeing a physical therapist if your pain:

• Persists instead of gradually improving
• Keeps coming back after workouts
• Limits your ability to exercise
• Makes everyday activities difficult
• Affects your strength, mobility, or range of motion
• Began suddenly during exercise or after an injury

A physical therapist can evaluate your movement, strength, mobility, and symptoms to help identify factors contributing to your pain. They can also create an individualized treatment and exercise plan designed to help you recover and safely return to the activities you enjoy.

At MPOWER Physical Therapy, our goal is not just to help you feel better, but to help you move better, get stronger, and confidently return to the activities that matter to you.

If you are unsure whether you are experiencing normal post-workout soreness or an injury, you do not have to figure it out alone. Listening to your body and getting professional guidance when needed can help you stay active while reducing the risk of making an injury worse.

MPOWER Physical Therapy has four convenient locations in Franklin, Brentwood, Green Hills, and Midtown. Our physical therapists can help you understand your pain, build strength, improve movement, and get back to doing what you love.

Sources:

Is it normal to be sore after a workout?. Cleveland Clinic. (2025a, April 4). https://health.clevelandclinic.org/should-you-workout-when-sore

What is a physical therapist (physiotherapist)?. Cleveland Clinic. (2025a, December 31). https://my.clevelandclinic.org/health/articles/24625-physical-therapist

What is Doms?. Cleveland Clinic. (2026, February 26). https://my.clevelandclinic.org/health/diseases/delayed-onset-muscle-soreness

What to do when you pull a muscle. Cleveland Clinic. (2025, November 18). https://my.clevelandclinic.org/health/diseases/22336-muscle-strains

Yetman, D. (2024, April 16). 14 tips to maximize muscle recovery. Healthline. https://www.healthline.com/health/muscle-recovery#foods