Advancement for strength and conditioning coaches depends on the individual's position, skills, and work ethic. Success for coaches can also be quantified by the success of the individuals they coach (for example, a basketball player who is able to double his or her playing time and scoring because he or she is in better condition), the number of athletes they coach (advancing to coach college athletes in multiple sports), or the type of employer (moving from the collegiate level to employment as a coach for a Major League Baseball team). Some coaches may advance by becoming well known enough to write books or produce how-to videos. Others may become college professors.