If you've ever been struck by muscle cramps mid-workout, you know how excruciating they can be. But what causes cramps, exactly, and is there anything you can do to prevent them? POPSUGAR Fitness posed this question to Bert Mandelbaum, MD to get his insight and expertise on this subject.

"We often hear of the energy bars people are encouraged to eat pre-workout, but it's actually the hydration that's going to see you through and help you recover faster," Dr. Mandelbaum said.

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