SHORTEN GASTROINTESTINAL TRANSIT TIME – A study from Koffler (1992) showed a 56% percent reduction in gastrointestinal transit time after 3 months of strength training. Rodney Rhoades and David R. Bell wrote in “Principles for Medical Medicine” that constant exercise accelerates gastric emptying and small intestinal transit. This is a significant finding because delayed gastrointestinal transit time is related to a higher risk of colon cancer. This means that constant exercise shortens the time it takes for your gut and intestines to “empty”. The longer food stays in your intestines the greater risk of colon cancer you may have.