Jane Fonda looked hot in those grainy old ‘80s VHS tapes. But those workouts have nothing on the ones you can find on a smartphone today, with top-notch instruction and an endless buffet of workout and gut-busting routines, all for a fraction of the cost of a gym. Here’s how to pick the pocket trainer for you.
Old-school workout videos have nothing on the high-tech programs you can get on your phone these days. Here's how to pick the right one for you.