It feels good to laugh once in a while. Everyone knows that. But laughter as a health-promoting exercise is not as widely practiced, despite the fact that scientists have long known about the potential healing effects of good humor.
Physical therapist Joe Gallagher's patient, a former New York Giants football player now in his 80s, was lying on the floor, stretching to regain flexibility after two total knee replacements. Progress was slow and painful, so Joe went to a reliable resource in his PT toolbox: humor.