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Writer's pictureLottie Miles

What is Cramp and How Can You Prevent It?

18th September 2023

Muscle cramps, those sudden and excruciating muscle contractions, are a common challenge during and after physical activity. But what’s the science behind them, and how can you prevent them?


The Culprit: Neuromuscular Hypothesis Recent research has shifted the blame away from dehydration as the primary cause of exercise-induced cramps. Instead, the neuromuscular hypothesis takes centre stage:

  1. Motor Neuron Overactivity: During exercise, nerves controlling muscle contractions can become overactive, causing muscles to contract excessively and not relax properly.

  2. Sensory Feedback Disruption: Muscle fatigue can disrupt communication between muscles and the central nervous system, resulting in prolonged contractions.

  3. Electrolyte Imbalance: Dehydration can exacerbate cramps by causing an electrolyte imbalance, affecting essential minerals like sodium, potassium, calcium, and magnesium needed for proper muscle function.


Prevention Strategies Understanding the science behind cramps helps you prevent them:

  1. Stay Hydrated: While not the sole cause, proper hydration with a balanced electrolyte intake is crucial.

  2. Warm-Up: Gradual warm-ups prepare muscles for exercise.

  3. Stretching: Regular stretching improves flexibility and reduces cramp risk.

  4. Nutrition: Consume a diet rich in minerals and electrolytes.

  5. Progress Gradually: Avoid overexertion, allowing your muscles to adapt to increased activity levels.


In a nutshell, exercise-induced cramps are a result of neuromuscular factors more than just dehydration. By following these preventive measures, you can reduce the chances of these painful interruptions during your workouts.

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