One of the greatest challenges facing any coach is time. It is rare to hear of a coach who has sufficient time to dedicate to all the potential areas for performance enhancement. Indeed, even if a coach had all the time he or she required, the amounts of work that they can do will be limited by the athletes’ training capacity. Training prescription is therefore always a matter of choice, and coaches are making daily decisions as to how best to allocate the time and athletes’ energy available to them. It can be argued that we can do anything, but we can’t do everything and that decisions as to training priorities are essential to the work of a strength and conditioning coach.