Dreading those boring, solitary gym sessions? Keep fitness interesting with an outside-the-box group activity. From planting trees in your ‘hood to plugging in the Wii for an at-home tennis tournament, there are tons of ways to sneak in a fun, social workout.

Do It Today: Grab some buddies and pitch in to clean up a local park for a great physical (and karmic) workout.

Ha, Ha, Ha!

Can laughing be a workout?

Runner’s High

Find out if fitness leads to happiness.