Fit to Swear: Study Finds Cursing Helps Build MuscleA new study from psychologists in the U.K. found that swearing can actually boost muscle strength and stamina. We apologize, this video has expired.Fit to swear: Study finds cursing helps build muscle01:00Link copiedMay 6, 2017, 7:47 PM UTC / Updated May 6, 2017, 7:47 PM UTC / Source: TODAY