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Caffeine can pump up your workout

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Caffeine before a workout may boost your exercise routine. (Source: CNN) Caffeine before a workout may boost your exercise routine. (Source: CNN)

 (CNN) - If you want a better workout, try a little caffeine before you lace up your tennis shoes. It may boost your exercise routine.

How so? For starters, if you're a trained athlete, it may help you burn more calories a few hours post workout, according to a study out of Spain.

Other research from Japan finds that drinking coffee may also improve circulation. Better circulation may mean a better workout.

And a study from Johns Hopkins finds that caffeine helps improve memory. People who had about 8 ounces of coffee did better on memory tests given a day later. This brain boost may help with recall for your exercise routine.

For endurance athletes, combining caffeine with carbs after a workout may increase the stockpile of muscle fuel meaning more reserves for the next workout.

That's according to a study in the Journal of Applied Physiology.

But don't overdo it. If you do consume caffeine, keep it to about 400 milligrams a day, the equivalent of about a 16 ounce cup of coffee.

And don't forget to continue to drink plenty of water.

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