Burn an Extra 150 Calories a Day Sitting on Your Couch

"There are lots of things in life you can't change (death, taxes and your in-laws come to mind), but thankfully your metabolism is under your control. Yep—you heard me right. In fact, simply by building more lean muscle, which burns triple the calories fat does, you can accelerate the fat-sizzling system Mother Nature issued you. And you don't have to make the gym your second home or guzzle muscle-building shakes like it's your job in order to turn up your burn. "