Doing the same exercise over and over (and over) again is a recipe for boredom and burnout. That's why you might want to mix things up with push-up variations. Beginners can modify with incline push-ups (see above), while more advanced exercisers can try variations like stability ball o...
That's what Joe Dwyer decided to do when he started Chicago-based Brill Street & Co., a jobs site for young professionals. He lets his employees use social networking and has found that, while they might spend time chatting up their friends, sometimes they're asking those same friends for...