> ## Content Index > Fetch the complete content index at: https://www.alphabetguides.com/llms.txt > Use this file to discover other available public pages before exploring further. # What is Delayed Onset Muscle Soreness (DOMS)? - URL: https://www.alphabetguides.com/doms/ - Published: 2026-09-03T08:00:36.000Z - Updated: 2026-09-03T09:43:35.000Z - Description: DOMS is a muscle soreness that occurs 12–48 hours after intense or unfamiliar exercise, caused by microtears in your muscle fibres. - Author: Dr. Robert Davies - Tags: Muscle, Exercise Key takeaways - DOMS is muscle soreness that occurs 12–48 hours after intense or unfamiliar exercise, caused by microtears in your muscle fibres. - It triggers inflammation and repair processes, particularly after you've done a lot of eccentric (lengthening) contractions. - DOMS isn't required for growth, but the inflammatory response aids repair. Activity recovery, nutrition and rest can help you manage it. If you’ve woken up a day or two after a tough workout feeling a dull, aching soreness in your [muscles](https://www.alphabetguides.com/tag/muscle/), you’ve experienced what is commonly known as Delayed Onset Muscle Soreness (DOMS for short). For many people who are trying to grow their muscles, DOMS can be an expected part of training. But what exactly is happening in your muscles? Is it good or bad? Can you fix DOMS, or should you leave it be? We'll try to answer some of these questions in this article. ## What is DOMS? DOMS typically occurs 12–48 hours after unfamiliar and "intense" physical activity. Particularly, after exercises involving “eccentric” muscle contractions, where the muscle lengthens under force (e.g., walking downstairs, lowering the weight during a bicep curl).[\[1\]](https://pubmed.ncbi.nlm.nih.gov/11731568/?ref=alphabetguides.com) This soreness differs from "acute" exercise pain. It doesn't happen straightaway (hence the D for "delayed" in DOMS). It's distinct from the sharp, intense pain of getting injured during training. DOMS is different, as it generally gets *worse* long after you’ve left the gym. DOMS is caused by “microtrauma” and biochemical imbalances that are inflicted on the muscle while you're [exercising](https://www.alphabetguides.com/tag/exercise/). This damage disrupts the structure of the muscle cells and the connective tissue that surrounds them.[\[2\]](https://pubmed.ncbi.nlm.nih.gov/28035017/?ref=alphabetguides.com) The initial mechanical "strain" to your muscle is caused by lifting and lowering the weights, which triggers inflammation and the release of molecules that stimulate pain signals to your brain. However, this inflammatory response is thought to also play a central role in stimulating muscle growth and repair. Your muscles respond to microtears by activating your “satellite cells”. These special cells then go on to accelerate the repair and growth process in your muscle. The connection between muscle damage, inflammation, and regeneration underscores why DOMS is sometimes considered a marker of an [effective workout](https://www.alphabetguides.com/3-maxims-of-training-for-muscle-growth/), meaning that your muscles are adapting. ![](https://storage.ghost.io/c/69/dc/69dcec6d-c40d-40e8-823a-e4ec7bb45b10/content/images/2026/08/doms-1.jpg) However, it's important to clarify that experiencing DOMS is *not* required for muscle growth. No pain *doesn’t* mean no gain. No DOMS *doesn't* mean no growth. You can stimulate growth with or without DOMS, as the principal driver of growth is mechanical tension (and maybe a bit of metabolic stress), not pain.[\[3\]](https://pubmed.ncbi.nlm.nih.gov/21270317/?ref=alphabetguides.com) The severity and duration of DOMS can vary between different people, different muscles, and different workouts. There are several factors that influence it.[\[4\]](https://pubmed.ncbi.nlm.nih.gov/12617692/?ref=alphabetguides.com)[\[5\]](https://pmc.ncbi.nlm.nih.gov/articles/PMC4983298/?ref=alphabetguides.com) - Novel types of exercise, greater loads, intensities, and volumes typically lead to more muscle soreness. - “Eccentric” muscle contractions generally cause more severe DOMS than “concentric” (muscle shortening) contractions - Training age: Experienced lifters tend to experience less severe DOMS as their muscles have adapted to training. This is known as the “repeated bout effect”. - Genetics & Age: Older adults tend to recover more slowly, and there are some genes that can either speed up or slow down recovery. --- ## How To Tell the Difference Between Injury and DOMS? #### Signs that it's an ****injury** **!** - Localised to a single region - Immediate pain and soreness - Last weeks - "Sharp" pain #### Signs that it's DOMS - Localised to the working muscles - Delayed onset of soreness (doesn't happen straightaway) - Lasts a few days, then starts to get better - "Stiff" and "achy" pain --- ## How to Manage DOMS This is a common problem for anyone who is serious about training hard and training regularly. While soreness is a natural part of the adaptation process, excessive soreness can hinder performance and motivation. The science offers mixed messages on different types of recovery methods, for example:[\[4\]](https://pubmed.ncbi.nlm.nih.gov/12617692/?ref=alphabetguides.com) - **Light exercise** promotes blood flow and has been shown to reduce soreness and improve recovery time. - **Massage therapy** can also provide short-term relief by enhancing circulation and reducing muscle stiffness. - **Cold water immersion** or ice baths have long been popular among athletes for alleviating DOMS. But evidence suggests that they *may* reduce soreness and inflammation. The impact of this on long-term muscle adaptation is less clear. There are concerns that excessive use of “[anti-inflammatory](https://www.alphabetguides.com/anti-inflammatory-diet/)” treatments (or drugs) *may* blunt the adaptive response by interfering with the muscle's natural repair and growth processes. However, this isn't to say that ice baths don't have other uses (e.g., pain relief), outside of growth and recovery.[\[6\]](https://pubmed.ncbi.nlm.nih.gov/28834248/?ref=alphabetguides.com) Nutrition also plays a vital role in managing muscle soreness and recovery. Adequate [protein intake](https://www.alphabetguides.com/tag/protein/) supports muscle repair. Antioxidants and [omega-3 fatty acids](https://www.alphabetguides.com/superfood-oily-fish/) *may* reduce inflammation and oxidative stress.[\[7\]](https://pubmed.ncbi.nlm.nih.gov/25610818/?ref=alphabetguides.com) More importantly, allowing [enough rest](https://www.alphabetguides.com/tag/sleep/) and gradually progressing training intensity remains the key to minimising excessive soreness and impairing progress. **DOMS is easier to prevent than to cure**. ## Bottom Line From a practical standpoint, it’s helpful to recognise that DOMS is a normal but possibly avoidable response to working your muscles. Instead of fearing soreness, treat it as feedback that your muscles are adapting. However, it’s also important to avoid pushing through severe pain that limits your mobility or strength, as this can increase injury risk. Gradual progression, proper warm-up, and cool-downs can mitigate soreness without compromising growth. DOMS represents a complex mixture of physical damage, inflammation, and natural repair processes triggered by exercise. Particularly after unfamiliar eccentric exercise. While it is associated with muscle "adaptations", it is neither necessary nor enough by itself for growth. Managing soreness through balanced training, nutrition, and [recovery](https://www.alphabetguides.com/rest-and-body-composition/) can help maintain consistency and maximise gains. --- We have a couple of resources if you're a beginner and looking to start growing muscle efficiently and effectively. [Resistance Training for BeginnersA series of lessons on how to start resistance training for beginners. Learn how to get bigger, faster, stronger and healthier.![](https://storage.ghost.io/c/69/dc/69dcec6d-c40d-40e8-823a-e4ec7bb45b10/content/images/icon/Logo--Square--1-4370d5f3-b7fe-4c9c-8924-c70ffede2178.png)Alphabet GuidesDr. Robert Davies![](https://storage.ghost.io/c/69/dc/69dcec6d-c40d-40e8-823a-e4ec7bb45b10/content/images/thumbnail/photo-1758875569256-f37c438cac65-e69c85ff-492c-4658-9848-0c2a325181be.jpeg)](https://www.alphabetguides.com/resistance-training-beginners/) [How to Build Muscle: The Basic Blueprint for BeginnersAn overview of the core principles of muscle hypertrophy. Learn how training, nutrition, and recovery drive muscle growth.![](https://storage.ghost.io/c/69/dc/69dcec6d-c40d-40e8-823a-e4ec7bb45b10/content/images/icon/Logo--Square--1-8e7e3db3-d844-46ce-b482-b467e08f4cd2.png)Alphabet GuidesDr. Robert Davies![](https://storage.ghost.io/c/69/dc/69dcec6d-c40d-40e8-823a-e4ec7bb45b10/content/images/thumbnail/photo-1530822847156-5df684ec5ee1-2-8f1fe6ce-5b89-409c-bf47-4dfaa52fd031.jpeg)](https://www.alphabetguides.com/back-to-basics-a-checklist-for-muscle-growth/) --- #### Sources 1. Proske U, Morgan DL. Muscle damage from eccentric exercise: mechanism, mechanical signs, adaptation and clinical applications. J Physiol. 2001 Dec 1;537(Pt 2):333-45\. PMID: [11731568](https://pubmed.ncbi.nlm.nih.gov/11731568/?ref=alphabetguides.com) 2. Peake JM et al. Muscle damage and inflammation during recovery from exercise. J Appl Physiol (1985). 2017 Mar 1;122(3):559-570\. PMID: [28035017](https://pubmed.ncbi.nlm.nih.gov/28035017/?ref=alphabetguides.com) 3. Flann KL et al. Muscle damage and muscle remodeling: no pain, no gain? J Exp Biol. 2011 Feb 15;214(Pt 4):674-9\. PMID: [21270317](https://pubmed.ncbi.nlm.nih.gov/21270317/?ref=alphabetguides.com) 4. Cheung K et al. Delayed onset muscle soreness : treatment strategies and performance factors. Sports Med. 2003;33(2):145-64\. PMID: [12617692](https://pubmed.ncbi.nlm.nih.gov/12617692/?ref=alphabetguides.com) 5. Baumert P et al. Genetic variation and exercise-induced muscle damage: implications for athletic performance, injury and ageing. Eur J Appl Physiol. 2016 Sep;116(9):1595-625\. PMID: [27294501](https://pmc.ncbi.nlm.nih.gov/articles/PMC4983298/?ref=alphabetguides.com) 6. Lilja M et al. High doses of anti-inflammatory drugs compromise muscle strength and hypertrophic adaptations to resistance training in young adults. Acta Physiol (Oxf). 2018 Feb;222(2). PMID: [28834248](https://pubmed.ncbi.nlm.nih.gov/28834248/?ref=alphabetguides.com). 7. Kim J, Lee J. A review of nutritional intervention on delayed onset muscle soreness. Part I. J Exerc Rehabil. 2014 Dec 31;10(6):349-56\. PMID: [25610818](https://pubmed.ncbi.nlm.nih.gov/25610818/?ref=alphabetguides.com)