How to Train As If Your VERY LIFE Depended on Your Degree of REAL Strength, Power and Toughness. Most physical training systems are designed for the domesticated human animal. That is to say, for us humans who live lives of such relative security that we cultivate our strength and power more out of pride and for a sense of accomplishment than out of an absolute need to survive in the wild. The professional athlete hones his body to function well in a sports event-rather than to emerge safe from a life-or-death struggle.