Time in front of the TV: We love a DVR-athon, too, but people who tuned in for two or more hours daily had weaker back and ab muscles (by up to 10 percent) than those who viewed less than two hours, regardless of their overall activity level, researchers from the University of Oulu note. An hour of tube time is fine, especially if it motivates you to hit the gym. Worthy of watching: Smallville's Tom "Clark Kent" Welling and Justin "Green Arrow" Hartley, whose super fly abs sure make us want to breathe heavier.
Sure, you can lose weight quickly. There are plenty of fad diets that work to shed pounds rapidly -- while leaving you feeling hungry and deprived. But what good is losing weight only to regain it? To keep pounds off permanently, it's best to lose weight slowly. And many experts say you can do that without going on a "diet." Instead, the key is making simple tweaks to your lifestyle.