WebMD -- Nov. 11, 2010 -- People are happiest when having sex, exercising, or talking to others -- in large part because such activities require enough concentration to keep their minds from wandering, new research indicates.
WebMD -- Nov. 11, 2010 -- People are happiest when having sex, exercising, or talking to others -- in large part because such activities require enough concentration to keep their minds from wandering, new research indicates.
