Published: Sep 13, 2013 9:37 AM EDT

FORT MYERS, Fla. - Caffeine is the most widely-used stimulant in the world.  It's found in most commonly consumed drinks such as tea, sodas and coffee.  Caffeine is also increasingly popular among athletes -- available as energy drinks and supplements.  WINK News Fitness Expert Mike Drumm is here to tell us more about the effects of the stimulant.