Whether you're going out for a walk or a run, to the gym to lift weights, or to the pool to swim a few laps, the self-affirmation involved in the concept of "going out" or "going to" something for the sake of exercise is quite substantial. For most of us, it takes an extra effort, an extra application

In his 1856 journal, the great American philosopher and naturalist Henry David Thoreau wrote, "I love the winter, with its imprisonment and its cold, for it compels the prisoner to try new fields and resources." Thoreau, a fearless explorer of inner and outer landscapes, welcomed opportunities to learn