In the few studies that have investigated the carbohydrate mouth rinse, this technique appears to be effective compared to rinsing the mouth with water or a non-nutritive solution. Spitting out the beverage, however, is likely not more beneficial than actually ingesting the beverage if the solution resides in the oral cavity for the same amount of time. Those who may be interested in the carbohydrate mouth rinse would be athletes who experience gastrointestinal discomfort from ingesting sports beverages during exercise or those who want to avoid consuming the calories. Event intensity and duration are also likely key influencers regarding whether or not carbohydrate mouth-rinsing is preferred to actual ingestion of the carbohydrate. During more intense or longer duration exercise, the physiological effects of carbohydrate ingestion become more important.