matthew:
thanks for the comment. i would say that a client's well-being is improved far greater by the sense of accomplishment that comes from being able to perform a feat formerly thought to be impossible
in my 20 years in the business i can say that people who have learned to do push-up and pull-ups, properly perform the hang clean, snatch and split jerk, can finish 10 60-yard shuttle runs in 15 seconds with 45 seconds of rest and other athletic, functionally sound activities feel better and are better off than anyone who completes a 8-15 rep set of an exercise or exercises.

and i'm not talking about athletes, i'm talking about men and women from the ages of 50-85 who came to me never having exercised in their lives.