Does Swimming Construct Muscle? | Effectively+Good


Whether you’re a little bit 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 stress-free strategy to work your physique and thoughts.

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

With toned muscle tissues and the cardiovascular capability to compete in such an aerobically demanding sport, taking a look at 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 sturdy and secure joints, to call just a few.

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

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

Swimming can also be a high-resistance, low-impact exercise. The exercise supplies plenty 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 great quantities of influence in your physique. On this means, swimming is a wonderful type of resistance coaching, which is likely one of the the reason why individuals on the lookout for a mild 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 admittedly particular to the game and will 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 possibly can study—freestyle, backstroke, breaststroke, and butterfly—and meaning you could have 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 stage are supplementing their swim coaching with land-based energy and resistance coaching in a gymnasium, in line with Kroetch.

A small 2019 research within the Worldwide Journal of Environmental Analysis and Public Well being adopted 34 ladies as they have 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 increase 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—nevertheless it reinforces Kroetch’s level that swimming is nice energy coaching… for swimming. Repeating a motion many instances over builds familiarity and movement-specific energy, which is the case with the motions of any of the 4 swim strokes.

Swim gear to construct energy

To extend how a lot resistance you expertise throughout a swim exercise, you should utilize quite a lot of swim gear—and lots of swimming pools could even have this gear readily 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 gear correctly to assist increase the energy advantages of a pool exercise.

1. Hand paddles

“Swim paddles are a implausible instrument for rising upper-body energy,” Dunkle says. “They enhance the floor space of your arms, creating extra resistance as you pull via the water.”

When utilizing hand paddles ($20, Amazon), keep correct method. Think about 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 preserving your legs buoyant,” Dunkle explains. “This lets you focus solely in your arm strokes with out worrying about kicking or your legs basically.”

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 ft, 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 fee coaching.”

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

“It’s essential have energy as a way to transfer via the water, and that muscular energy improves with repetition, however in the end 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 doubtlessly lead to elevated muscle mass, for a lot of, the extra noticeable athletic advantage of swimming is that it will probably enhance your cardiovascular system and cardio health.

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

Cardiovascular exercises usually imply you might be respiration—and your coronary heart is pumping—sooner than while you’re at relaxation. It is 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, in line with the Mayo Clinic.

As you turn into fitter via cardio exercises, your physique turns into extra environment friendly at transporting oxygenated blood to your massive muscle teams, which amongst different issues, can mean you can hit sooner paces or tougher cardio efforts.

“Swimming is more practical at constructing cardiovascular capabilities than constructing muscle—swimming is a low-impact exercise, however that doesn’t imply it’s a simple exercise cardiovascularly,” Kroetch says. “Nonetheless, for most individuals, the cardiovascular calls for of swimming are much less strenuous on the physique general than an identical cardio exercise like working, which implies you possibly can spend extra time in a productive coronary heart fee zone whereas swimming, which lets you construct a powerful base of cardio health.”

Throughout a large multi-decade research known as the Aerobics Heart Longitudinal Examine, which ran from 1974 to 2002, 46,000 individuals  have been assessed over a few years on their cardio health and bodily well being on account of their health actions. Swimmers and runners have been the 2 “fittest” teams throughout the multi-year examine ins, with the bottom blood stress, levels of cholesterol, and most vitality output numbers, amongst different measures of cardiovascular well being.

“Identical to with different cardiovascular coaching, you possibly can tailor swim exercises to make an influence on all coronary heart fee zones of your cardiovascular health,” Kroetch says. “Longer however simpler swims will assist you to to construct an cardio base, whereas tougher efforts with brief relaxation will enhance your cardio threshold.”

In case you’re on the lookout for an excellent cardio exercise, you don’t at all times need to hit the treadmill. Swimming is a wonderful means to enhance cardiovascular health when executed 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 examine together with your native lap pool to grasp its size. The exercise beneath is for yards or meters.

Incorporate at the very least 30 seconds of relaxation in between every interval; take extra relaxation if wanted.

A swimming exercise to construct energy

  • 200 freestyle swim, no gear
  • 2×100 backstroke or breaststroke, no gear
  • 100 breaststroke, no gear
  • Utilizing a kickboard and fins in your ft in the event that they’re obtainable:
    • 8×25 onerous 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 tissues
    • 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 gear
  • 100 simple backstroke or breaststroke, no gear

A swimming exercise to enhance your cardio

  • 200 freestyle swim
  • 2×100 backstroke or breaststroke
  • 100 breaststroke
  • 4×25 any stroke, enhance your effort every 25, final 25 ought to depart you out of breath
  • *take additional relaxation right here till your respiration returns to regular*
  • 4×25 any stroke, enhance your effort every 25, final 25 ought to depart 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

At the beginning, swimming is cardio. As a secondary profit, swimming is resistance and energy coaching—however the energy you acquire from swimming alone will finest assist you to additional your swimming and will 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 continually working towards the water, however swimming at its core is a cardiovascular train,” Kroetch says. “It’s essential have energy as a way to transfer via the water, and that muscular energy improves with repetition, however in the end it is your cardiovascular system that carries you thru a swim exercise.”

Plus, swimming is the one sport the place you possibly can’t breathe any time you need to—you have to time your breath while you rotate your physique to position your face out of the water for a short second, Kroetch notes.

In case you’re trying so as to add swimming to your exercise routine, Kroetch has some suggestions.

“Figuring out swim as an exercise and figuring out 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 soar in with a plan to swim for half-hour straight, however which may be tougher than you assume, so I like to recommend beginning with shorter repeats, or intervals, at a neater depth.”

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

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


Effectively+Good articles reference scientific, dependable, current, sturdy research to again up the knowledge we share. You possibly can belief us alongside your wellness journey.


  1. Charmas M, Gromisz W. Impact of 12-Week Swimming Coaching on Physique Composition in Younger Girls. 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, Enviornment R, Wisløff U. Private exercise intelligence and mortality – Knowledge from the Aerobics Heart Longitudinal Examine. 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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