You experience a cramp that wakes you up at night or stops you mid-workout. You've been told to drink more water, eat bananas for potassium, and avoid lactic acid. You've tried everything, but the cramps keep coming back. It's frustrating not to find a solution that truly works.

• Muscle fatigue is the main trigger for cramps, not dehydration¹
• Lactic acid does not cause muscle soreness; that's a persistent myth.
• Rest and recovery are more effective than supplements.
• Hydration remains important, but it's not the direct cause of cramps.

This article debunks common beliefs about cramps and muscle soreness. To understand muscle pain in general, consult our article on overuse injuries.

Muscle Fatigue: The Real Culprit

Contrary to popular belief, muscle cramps are not directly caused by a lack of water or electrolytes. In fact, several studies show that muscle fatigue is the main trigger for cramps. When a muscle is overused or tired, it can temporarily lose its ability to relax, leading to a painful, involuntary contraction commonly known as a cramp. This fatigue can, for example, be linked to insufficient recovery or excessive exertion.

Lactic Acid: Friend or Foe?

Lactic acid, on the other hand, is a substance produced by muscles during intense physical activity. Contrary to a persistent belief, it does not directly cause post-exercise muscle pain (soreness). However, its temporary accumulation can be responsible for the burning sensation felt during exertion.

The Role of Hydration

Furthermore, water is essential for the proper functioning of the body, including muscles. It makes up about 60% of body weight and plays a key role in regulating vital functions. Dehydration can lead to decreased performance, increased fatigue, and slower muscle recovery. However, while hydration is crucial for our well-being, it is not the primary cause of cramps.

10 Quick Tips for Understanding Your Pain

The ones that have made the biggest difference in my patients' lives. 1 a day, 2 minutes.

(function(){

// GHL form_embed.js reads UTM from parent page URL

// Add UTM params to URL before loading iframe

var path = window.location.pathname;

var parts = path.split('/').filter(Boolean);

var slug = parts[parts.length - 1] || 'homepage';

var source = parts[0] || 'direct';

var url = new URL(window.location.href);

if (!url.searchParams.has('utm_term')) {

url.searchParams.set('utm_term', slug);

url.searchParams.set('utm_source', source);

url.searchParams.set('utm_medium', 'cta-inline-form');

window.history.replaceState({}, '', url.toString());

}

})();

How to Prevent Cramps?

Finally, to prevent muscle fatigue and, consequently, reduce the frequency of cramps, it is crucial to allow your body time to recover after exertion. In other words, rest allows muscle fibers to repair and strengthen themselves. In summary, good hydration, a balanced and healthy diet, and restorative sleep are essential habits to keep your muscles fresh and ready for your next workouts.

Resources

• McKinley, M. P., & Tarini, L. (2019). Anatomy and Physiology: An Integrated Approach (2nd ed.). Chenelière.

• Nelson, N.L., & Churilla, J.R. (2016). A narrative review of exercise-associated muscle cramps: Factors that contribute to neuromuscular fatigue and management implications. Muscle & Nerve, 54.