Exercise and Caffeine Caffeine has also been studied for its use as an exercise aid. In a few studies caffeine has been shown to increase an athlete's overall performance level. Those athletic events which are of moderate intensity have been shown to be aided by the use of caffeine. It mostly affects the athlete's ability to increase the intensity or duration of exercise. But combined with caffeine's diuretic effect, an increased level of exercise can lead an athlete to dehydration.
Caffeine has some negatives and positives, that much is certain.
As a general guideline, people should remember that caffeine is a drug . It should not be used recklessly or without caution. Moderate use of almost any legal substance is acceptable, but we must keep in mind that caffeine has more side effects that we will ever know.