When it seems like all of our favorite sports heroes are getting slammed for using performance enhancing drugs, the answer has always been in a simple, steaming cup of joe. That’s right, coffee and more specifically caffeine is a legal performance enhancer. The amount of data from well respected labs is unbelievable, however, there is new research going into how much caffeine is need to produce the desired effects. Studies now show that caffeine effects the brain’s sensation to exhaustion or the feeling that you cannot go on any longer as well as the releases calcium in the stored in the muscle allowing you to have more endurance. To read more about the untapped resources in your favorite can of soda to go to NYTimes.com.