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Why Do Muscles Cramp?

One of the main causes of muscle cramps is the hyperexcitability of the motor neurons that control the muscles. When these neurons become overactive, it can lead to unwanted muscle contractions. In other words, the muscle tightens and doesn't release. There are several reasons why these motor neurons may respond this way.

Muscle Overexertion and Electrolyte Balance

When you demand more from your muscles than they're used to, you risk cramps. This is particularly true during intense activities like marathons or extreme workouts. Muscle fatigue seems to be an important factor. Fluid and electrolyte losses may contribute in some situations, but cramps are not an inevitable result of dehydration. This often happens to athletes under significant stress who are not drinking enough or losing essential minerals. Our bodies need electrolytes (minerals like magnesium, calcium, potassium, sodium and not to forget salt) to function smoothly. Therefore, it's especially important to ensure that these minerals are available in sufficient amounts during intense physical exertion. On hot days, you should pay extra attention. If your body is losing potassium and sodium, it's crucial to consume enough salt and fluids. How much fluid and salt you actually need depends on the activity, how much you sweat and the conditions. 

Oh, and of course, don't overdo it with the mentioned minerals, as too much can cause the opposite effect. For instance, excessive potassium can throw your electrolyte balance out of whack and promote muscle cramps. The point is not to start worrying about eating a mango, though. For most healthy people, normal portions of fruit are not a realistic cause of dangerous potassium levels.

Other Possible Hidden Causes

If you've optimized your fluid and electrolyte balance yet still frequently experience muscle cramps, there may be other potential causes to consider. Certain medications can cause muscle cramps as a side effect, including blood pressure medications, lipid-lowering drugs, and beta-agonists. Alcohol can also be a contributing factor. Additionally, there are specific medical conditions that can predispose you to cramps, such as Parkinson's disease, diabetes, or hypothyroidism. If you regularly suffer from cramps, it's definitely worth consulting a doctor.

Closing Words

As you can see, there's much more to muscle cramps than just magnesium deficiency, and it's important to keep your overall electrolyte balance in check.