Isotonic drinks contain similar concentrations of salt and sugar as in the human body, and are designed to replace the fluids that are lost by sweating. They also provide a boost of carbohydrates.
Get a personalised training plan and track your training.
Facts and figures to track how far you’ve come.
Map and share your running routes.
Expert advice to answer all your questions.
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NOTICE: Great Run Training will no longer be available after 30th November 2019. If you have any queries please email firstname.lastname@example.org.