Cross Fit is a high intensity muscle strength and endurance conditioning program utilizing ballistic, repetitive motions in rapid succession in a short amount of time with minimal or no recovery periods. This type of physical training is gaining more and more popularity over time, drawing interest from the general population. It focuses on the "workout of the day" (WOD), which varies across different participants. CrossFit incorporates exercises from Olympic/power lifting along with gymnastics moves and other sporting activities. However, to date, very few if any studies have examined the pattern of trauma or injury rate among CrossFit athletes. We encountered an unusual case of a female athlete who sustained an acute Achilles tendon rupture while performing box jumps necessitating primary repair.