Endurance training will focus on cardiovascular fitness, which includes the various aspects of the body's ability to both row at a high speed, which is a function of the rower's stroke rate, as well as the rower's recovery from high intensity effort. One important component for the rower is the ability to use oxygen at the highest possible level, the VO2max of the athlete. In addition to rowing, running, both over distances as well as through interval sprints, and cycling are cross training devices that will aid the rower in this respect.