A key to positive energy and full engagement is the concept that energy recovery is equally important to, if not more important than, energy expenditure. Individuals may be designed more as sprinters than long-distance runners, putting forth productive energy for short periods and then requiring time for recovery to reenergize. This approach to motivation and work is based on a balanced approach to the human body's potential to build or enhance its capacity, thus enabling the individual to sustain a high level of performance in the face of in creasing work demands.