Swimming Cramps: Causes, Cures, & Prevention Methods

swimmer man doing crawl swim in swimming pool portrait. closeup

All serious swimmers will experience the agony of muscle cramps at some point in their careers. Even the fittest and toughest swimmers will experience swimming cramps from time to time. They are unwanted and unpleasant, but fortunately, in most cases, entirely preventable.

Below we will discuss the causes of swimming cramps, the various types of cramping, cures, and prevention techniques. The last thing you want are leg cramps when swimming, be it for leisure or, more importantly, in a competitive race.


What Causes Swimming Cramps?

There are an abundance of places in which you can have a swimming cramp. Many factors can lead to cramping, and we will examine several potential causes of cramps while swimming:

Electrolyte Imbalance and Dehydration

Sufficient water intake is critical, as is a balanced and nutritious diet. Additionally, a quality electrolyte powder will help ensure your body has the proper nutrients and hydration.

Cold Water

Cold causes muscles to contract, stiffen, and shrink, which can contribute to cramping. It stands to reason that swimming in cold water is likely to increase the chance that cramps will occur. While this can often not be avoided, one needs to be aware of the risk. Take the proper precautions and don’t swim alone in the cold.

Fatigue and Muscle Overuse

If you overexert your body, then cramps are likely to occur. While you want to perform at your peak, understand that cramps are a sign that your muscles may be tired. If you push yourself too hard, cramps are inevitable.

Understanding the potential causes of cramps will reduce the risk of their occurrence and give you some idea of how to prevent foot cramps while swimming.


Types of Cramps While Swimming

young woman massaging her painful foot from exercising and runni

There is a range of cramps that swimmers might experience; let’s examine a few of them.

  • Ankle and Foot Cramps
  • Foot cramps while swimming are probably the most common type of cramping for the average swimmer. Given the amount of unusual activity performed by the foot and ankle when you swim compared to regular exercise, you can almost certainly expect a foot cramp. Swimming is a rigorous full-body workout, after all.
  • Toe Cramps While Swimming

You may be familiar with toe cramps while swimming. This is because when we swim, we use muscles and movement not used in regular exercise or activity. 

Swimming will strengthen these muscles and improve movement, but cramps can still be expected, especially if you have a habit of firmly curling your toes.

  • Leg Cramps While Swimming

Without sufficient training or during extreme activity, one can also expect to have leg cramps while swimming. These tend to be hamstring cramps, but they can occur in quad muscles too.  

If you are swimming long distances, this can be potentially dangerous. If you get such a cramp, it is essential to get yourself out of the water. Static stretching should be avoided. Instead, you should use gentle movement and ultimately rest, elevate, and ice your cramped muscle.

  • Calf Cramp While Swimming
  • Another common issue is calf cramps. They do a lot of the hard work and, when exerted, often end up strained.

Cures for Cramps

Prevention is always the best cure. This includes proper training and sufficient hydration, as well as adequate electrolyte supplementation in your system.

Warming up before your swim is also essential. This will give the muscles a chance to flex and prepare for the task ahead. You also want to stretch and gently “warm down” after an arduous swim.

Once a cramp sets it in, you mustn’t “work through it” because you can cause an actual injury. Static stretches are also a risk for injury.  Instead, use gentle, slow dynamic stretches and massage the area. 

If that doesn’t work, you should either apply heat or ice to the area, compress it, elevate it, and rest it. Heat usually feels better but is less effective at resolving the cramp.

How to Prevent Swimming Cramps

sports drink fitness man drinking water botlle during outdoor ex

The above information should give you practical advice on how to prevent foot cramps while swimming, among other common forms of cramping.

Here are a few other tips:

Diet and Electrolyte Intake

Your intake of electrolytes, water, and food is critical. You cannot expect to perform at your peak with insufficient hydration. It is best not to eat a big meal right before a swim, but you should have a proper meal within four hours of exertion. 

Eat a well-balanced diet, and take supplements for nutrients in which you may be deficient. 

The salt or electrolyte levels in your blood impact cramping. If you exercise a lot, you may be at risk of an electrolyte deficiency. 

Many people don’t realize how much you sweat while swimming. An electrolyte-rich beverage is a great option to replenish lost salts.

Training

No athlete can expect good performance without the necessary training. If you wish to swim well and avoid cramps, regular exercise is essential.

Technique

An incorrect swimming posture could negatively impact performance and lead to additional swimming cramps. Ensure you assume the correct posture and stick to it in order to minimize the risk of cramps. Work with a coach or swim instructor to hone your form.

Don’t Overdo It

Despite your training and competitive edge, there is only so much your body can handle. Overexerting yourself will lead to cramps, potential injury, and other issues. Understand your limits and, while pushing yourself, do not put yourself in danger.

Final Thoughts

If you swim regularly, understand that swimming cramps will happen, and be prepared to mitigate mild forms of cramping. However, if you follow the advice above, cramps should be a minor issue and not detract from your enjoyment of the sport.

Most importantly, stay hydrated and use a quality electrolyte hydration powder such as MAGNAK. This will give your body the essential fuel it needs to swim to the best of its ability.

sourabh 1
Dr. Sourabh Kharait, MD, PhD.
Dr. Kharait’s sports nutrition blog is created from his “real-world” clinical experience as a Renal and Electrolyte Specialist (Nephrologist). An author of multiple, original peer-reviewed journal articles within this field for the last decade, and an inventor of numerous patented electrolyte formulas, he strives to be on the leading edge of electrolyte science for both athletes and those suffering from gut disorders. Learn more about how electrolytes interact with our body, including calcium, sodium, potassium and magnesium. Blog posts and articles related to performance and health are here to help, educate, and inform.