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 - getting our blood flowing a little more.
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 oz cup of coffee.
And don't forget to continue to drink plenty of water.