Salt and exercise

Salt and exercise

Exercise helps us stay fit, maintain a healthy weight and reduces our stress levels. Long term, it helps to protect against heart disease and stroke, and to keep our blood pressure constant.

Active people need plenty to drink to prevent dehydration. When we exercise, we sweat - losing both water and sodium. It is crucial to drink water before, during and after exercise. As a rough guide, you need to drink about a pint of water or other non-alcoholic drink for every 30 minutes of activity, and more in hot environments.

However, if we just replace the water, our blood plasma will be diluted. We must also replace the sodium and carbohydrate we lose.

Dietician and sports nutritionist, Jane Griffin, recommends sports drinks: “Not only does the carbohydrate give the athlete an energy boost, but combined with sodium, it also helps the water to be absorbed through the gut wall more quickly by binding with it and carrying it across.”
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