David Sabgir, founder of Walk with a Doc, on why exercise is 100 times better than medicine

More and more evidence suggests that nature does something essential for our mental health

A grassroots movement of physicians are prescribing time outdoors as the best possible cure for a growing list of ailments. Can they really convince big health care that free medicine is the way of the future?

We can all get obsessive about our daily workouts. When does obsession turn to addiction?