Get moving during your favorite TV shows. Skip, dance, go up and down some stairs, run in place—anything that gets your heart rate up so you feel somewhat breathless, says Geralyn Coopersmith, senior national manager at Equinox Fitness. Do it for each 2-minute break (forget the TiVo) during a typical 2-hour TV night and you'll burn an extra 270 calories a day—which can translate to a 28-pound weight loss in a year. (Try this total-body toning routine you can do while watching TV.)