Does Swimming Build Muscle? | Well+Good

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Whether you’re just a little child leaping into the pool in your summer time break or an grownup reaping the advantages of swimming for well being and longevity, swimming could be a enjoyable and even enjoyable technique to work your physique and thoughts.

Taking a look at aggressive swimmers, it’s arduous to overlook their toned physiques and muscular arms and shoulders. Their cardio capacities are large, too, as they spend numerous hours every week with their faces submerged in water between breaths.

With toned muscle tissue and the cardiovascular capability to compete in such an aerobically demanding sport, lifelong and aggressive swimmers begs the query: Does swimming construct muscle or is it extra of a cardio exercise? We chatted with specialists to seek out out.


Consultants In This Article

  • Julie Dunkle, an elite triathlete, skilled gravel bicycle owner, and triathlon coach
  • KJ Kroetch, CPT, Colorado-based swim and triathlon coach and licensed private coach

Does swimming construct muscle and energy?

Energy coaching has many advantages: constructing muscle, sustaining muscle mass, and creating robust and steady joints, to call just a few.

Energy coaching is a high-resistance, low-impact exercise. By lifting heavy objects with out vital forces of affect performing in your physique (like leaping or hopping), your physique leverages its muscle tissue to maneuver the heavy objects, which is the essence of a energy exercise.

As you’re employed particular muscle tissue—and nourish them with protein after a exercise—you develop muscle tone and mass and total muscular energy.

Swimming can be a high-resistance, low-impact exercise. The exercise gives loads of power to push towards as a way to make progress (the power is the water on this case) with out requiring you to enact large quantities of affect in your physique. On this manner, swimming is a superb type of resistance coaching, which is among the the explanation why folks in search of a delicate but environment friendly exercise go for it.

Colorado-based swim and triathlon coach and licensed private coach KJ Kroetch, CPT, notes that whereas swimming does construct muscle and energy, it builds swim-specific energy, which can or will not be relevant elsewhere in your life.

“Energy from swimming is de facto particular to the game and should not at all times convert to different areas of life,” Kroetch says. “That is much like any repetitive motion—not simply swimming—the place you’ll construct particular energy to that motion. The bonus with swimming is that there are 4 strokes you’ll be able to be taught—freestyle, backstroke, breaststroke, and butterfly—and which means you’ve 4 methods to construct swim-specific energy.”

The skilled and Olympic swimmers you see on TV and social media have constructed a few of their muscle mass from swimming alone, however swimmers of that degree are supplementing their swim coaching with land-based energy and resistance coaching in a gymnasium, based on Kroetch.

A small 2019 examine within the Worldwide Journal of Environmental Analysis and Public Well being adopted 34 ladies as they had been divided into two teams: one that did not take part in any swim coaching over 12 weeks and one which participated in a 12-week, 36-session swim coaching program that had the ladies in that group swim a complete of 42,000 meters over the 12 weeks.

Whereas ladies within the swim coaching group noticed a major lower in physique fats of as much as 9.5 % over the 12 weeks, they did not see an enormous enhance in muscle mass—swimming solely elevated their muscle mass by a most of two.1 %.

This does not imply that swimming isn’t good resistance coaching—but it surely reinforces Kroetch’s level that swimming is nice energy coaching… for swimming. Repeating a motion many occasions over builds familiarity and movement-specific energy, which is the case with the motions of any of the 4 swim strokes.

Swim tools to construct energy

To extend how a lot resistance you expertise throughout a swim exercise, you should use quite a lot of swim tools—and plenty of swimming pools could even have this tools available at their pool decks.

Julie Dunkle, a California-based triathlon coach and achieved triathlete and open water swimmer, is an advocate of utilizing swim tools correctly to assist enhance the energy advantages of a pool exercise.

1. Hand paddles

“Swim paddles are a incredible instrument for growing upper-body energy,” Dunkle says. “They improve the floor space of your fingers, creating extra resistance as you pull via the water.”

When utilizing hand paddles ($20, Amazon), preserve correct approach. Take into account eradicating the wrist strap and utilizing solely a finger strap to determine any flaws in your stroke as you pull your forearm and higher arm via the water.

2. Pull buoy 

“A pull buoy, which is positioned between the higher thighs, isolates your higher physique by protecting your legs buoyant,” Dunkle explains. “This lets you focus solely in your arm strokes with out worrying about kicking or your legs on the whole.”

Use a pull buoy ($14, Amazon) with hand paddles to maximise emphasis in your higher physique, enhancing arm energy.

3. Swim fins

“Normal swim fins, which go in your toes, are designed to boost the kicking movement, primarily partaking the quadriceps,” Dunkle says. “This elevated muscle engagement can considerably tax the cardiovascular system, making them helpful for prime coronary heart price coaching.”

Swim fins ($63, Amazon) additionally assist refine kick approach and promote higher physique place within the water, based on Dunkle. They’re shorter and wider than commonplace snorkeling fins, that are lengthy and slim. They work by growing resistance whereas kicking and serving to construct leg energy.

“You have to have energy as a way to transfer via the water, and that muscular energy improves with repetition, however finally it is your cardiovascular system that carries you thru a swim exercise.” —KJ Kroetch, CPT

Does swimming enhance your cardiovascular system?

Whereas swimming by itself may end up in constructing swim-specific energy and probably end in elevated muscle mass, for a lot of, the extra noticeable athletic good thing about swimming is that it might enhance your cardiovascular system and cardio health.

A cardiovascular exercise is mostly one which requires steady motion of your total physique via actions like biking, working, energy strolling, or swimming.

Cardiovascular exercises typically imply you might be respiration—and your coronary heart is pumping—sooner than while you’re at relaxation. It’s because while you’re collaborating in cardiovascular train, there’s an elevated demand for oxygenated blood out of your coronary heart to be pumped to the remainder of your physique, based on the Mayo Clinic.

As you develop into fitter via cardio exercises, your physique turns into extra environment friendly at transporting oxygenated blood to your giant muscle teams, which amongst different issues, can will let you hit sooner paces or more durable cardio efforts.

“Swimming is simpler at constructing cardiovascular capabilities than constructing muscle—swimming is a low-impact exercise, however that doesn’t imply it’s a straightforward exercise cardiovascularly,” Kroetch says. “Nevertheless, for most individuals, the cardiovascular calls for of swimming are much less strenuous on the physique total than an identical cardio exercise like working, which suggests you’ll be able to spend extra time in a productive coronary heart price zone whereas swimming, which lets you construct a robust base of cardio health.”

Throughout a large multi-decade examine referred to as the Aerobics Middle Longitudinal Research, which ran from 1974 to 2002, 46,000 folks  had been assessed over a few years on their cardio health and bodily well being because of their health actions. Swimmers and runners had been the 2 “fittest” teams throughout the multi-year verify ins, with the bottom blood stress, levels of cholesterol, and most power output numbers, amongst different measures of cardiovascular well being.

“Similar to with different cardiovascular coaching, you’ll be able to tailor swim exercises to make an affect on all coronary heart price zones of your cardiovascular health,” Kroetch says. “Longer however simpler swims will aid you to construct an cardio base, whereas more durable efforts with brief relaxation will enhance your cardio threshold.”

In the event you’re in search of an amazing cardio exercise, you don’t at all times need to hit the treadmill. Swimming is a superb manner to enhance cardiovascular health when completed usually for weeks at a time, or when coupled with different cardiovascular actions reminiscent of working.

Swimming exercises

Most traditional lap swimming pools are 25 yards or 25 meters from one finish to the opposite, however verify along with your native lap pool to grasp its size. The exercise under is for yards or meters.

Incorporate not less than 30 seconds of relaxation in between every interval; take extra relaxation if wanted.

A swimming exercise to construct energy

  • 200 freestyle swim, no tools
  • 2×100 backstroke or breaststroke, no tools
  • 100 breaststroke, no tools
  • Utilizing a kickboard and fins in your toes in the event that they’re obtainable:
    • 8×25 arduous kick
    • 8×25 backstroke with fins on
    • 100 common freestyle
    • 100 common backstroke
  • Utilizing hand paddles and a buoy between your legs:
    • 8×25 specializing in utilizing your lat muscle tissue
    • 8×25 specializing in not arching your low again and utilizing your core
    • 100 freestyle with each fins and paddles on
    • 100 backstroke with fins on
  • 100 simple freestyle, no tools
  • 100 simple backstroke or breaststroke, no tools

A swimming exercise to enhance your cardio

  • 200 freestyle swim
  • 2×100 backstroke or breaststroke
  • 100 breaststroke
  • 4×25 any stroke, improve your effort every 25, final 25 ought to go away you out of breath
  • *take further relaxation right here till your respiration returns to regular*
  • 4×25 any stroke, improve your effort every 25, final 25 ought to go away you out of breath
  • 100 simple freestyle
  • 4×100 freestyle, attempt to do the second 50 of every 100 sooner than the primary 50
  • 100 simple backstroke
  • 4×25 any stroke, each a tough effort with loads of relaxation
  • 4×25 any stroke, begin with a tough effort, each will get simpler
  • 100 simple freestyle or backstroke

The underside line

Before everything, swimming is cardio. As a secondary profit, swimming is resistance and energy coaching—however the energy you acquire from swimming alone will greatest aid you additional your swimming and should not apply to different areas of your life or actions.

“Swimming exists on the intersection of a Venn diagram, the place it feels fairly resistance-based since you’re always working towards the water, however swimming at its core is a cardiovascular train,” Kroetch says. “You have to have energy as a way to transfer via the water, and that muscular energy improves with repetition, however finally it is your cardiovascular system that carries you thru a swim exercise.”

Plus, swimming is the one sport the place you’ll be able to’t breathe any time you need to—it’s essential to time your breath while you rotate your physique to position your face out of the water for a quick second, Kroetch notes.

In the event you’re wanting so as to add swimming to your exercise routine, Kroetch has some ideas.

“Realizing methods to swim as an exercise and realizing methods to swim laps at a lap pool aren’t essentially the identical factor,” Kroetch says. “It might be tempting to go to a lap pool and bounce in with a plan to swim for half-hour straight, however that could be more durable than you suppose, so I like to recommend beginning with shorter repeats, or intervals, at a better depth.”

When you’ve constructed up confidence, cardiovascular health, and energy from swimming laps, you’ll be able to progress your swim exercises to elevated intervals and decreased relaxation intervals between the intervals.

Kroetch recommends swimming laps two-to-three occasions per week to see regular enchancment in each cardiovascular and swim-specific energy capabilities.


Nicely+Good articles reference scientific, dependable, latest, strong research to again up the knowledge we share. You’ll be able to belief us alongside your wellness journey.


  1. Charmas M, Gromisz W. Impact of 12-Week Swimming Coaching on Physique Composition in Younger Ladies. Int J Environ Res Public Well being. 2019 Jan 26;16(3):346. doi: 10.3390/ijerph16030346. PMID: 30691153; PMCID: PMC6388213.

  2. Nauman J, Sui X, Lavie CJ, Wen CP, Laukkanen JA, Blair SN, Dunn P, Area R, Wisløff U. Private exercise intelligence and mortality – Knowledge from the Aerobics Middle Longitudinal Research. Prog Cardiovasc Dis. 2021 Jan-Feb;64:121-126. doi: 10.1016/j.pcad.2020.05.005. Epub 2020 Jun 16. PMID: 32560967.



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