■ Want to burn more calories? No need to get stuck on one particular exercise or train for twice as long—just don’t sit down. Simply keeping your body moving during a workout, especially between sets, raises your metabolism and promotes fat loss better than any gimmick. Follow this program for four weeks and you’ll get the results you’ve been restless for.
How it works
■ These routines use circuits—exercises done back to back without rest—to train the whole body, making the most of every second you spend in the gym. The key is to vary the intensity, mixing hard moves with easier ones so you burn the most calories without burning yourself out. (After all, a workout is no good if you can’t finish it.) So between sets of squats and rows, for instance, you’ll do rope jumping, which will keep you moving but not completely exhaust you. You’ll stay energized enough to give
