(Avoiding Muscle Cramps, more)
Electrolytes control the shift of fluids in and out of cells. The electrolyte of most concern during exercise is sodium. Found as sodium chloride in table salt. We lose more sodium in sweat than the other electrolytes. Both water and sodium are lost in sweat. Replacement of water without sodium can lead to dangerously low blood sodium levels, called hyponatremia.
Hyponatremia can occur when we sweat and loses lots of sodium. It happens a lot in endurance exercise such as marathon running. Muscle cramps are usually felt when the levels of sodium in the blood drop; they can quickly become a serious medical emergency if the lack of sodium is not treated.
Always have a little salty food or sodium rich sports products
before, during and after exercise
Carbohydrate depletion can also result in sudden muscle cramps as they are the main fuel used during exercise. A limited amount of carbohydrates are stored as glycogen in our muscles which give the muscle the energy that it needs to move the limbs.
If the levels of glycogen become exhausted, muscle cramps are very likely to be experienced. We should always add carbohydrates during any activity that will last longer than an hour. Intense exercise less than an hour can deplete the amount of glycogen in the muscles. Always consume a carbohydrate-rich meal or snack before any intensive exercise.