Sports drinks

CBC Marketplace – Sports drinks unnecessary, counterproductive for most people:

Sports drinks promise to rehydrate, provide energy to muscles in the form of sugar and replenish electrolytes lost during exercise. Canadians guzzle more than $450 million in sports drinks every year.

To test how many electrolytes are actually lost during exercise, Marketplace recruited a team of recreational runners and tested their blood before and after a 45-minute run. None of the runners depleted either their glucose or electrolyte levels enough to require a sports drink to replenish them. In many cases, electrolyte and glucose levels increased in the blood. The test revealed that they could have benefited from water alone.

Protein bars are also largely unnecessary.

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