Increasing Glycogen Capacity

Glycogen is your body's primary storage form of carbohydrate energy. There's usually enough glycogen present at any one time to fuel 2 or 3 hours of moderate intensity exercise. Research from Indiana University's Human Performance Laboratory suggests that long-distance running can increase your glycogen storage capacity.

The Bigger Picture: This study was developed for marathon runners, so casual joggers might have to work their way up to the scientist's minimum long run distance of 8 to 10 miles. If you don't hit the trail all that often, going just 5 might help you build glycogen reserves. People who've run a marathon before are encouraged to run 15 miles at least twice a week and preferably 20 miles. Going that distance will help you better handle the demands of a 26 mile, 385 yard race.
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