Get in Shape Fast

14 Shape-Up Shortcuts

You don’t need to spend an extra second at the gym to score a killer butt, legs, abs, and arms. These genius tricks will help you drop pounds and sculpt muscle in record time

Join the Workout of the Month Club

When you stop seeing results, your first instinct may be to stay on the treadmill or elliptical longer. But tacking on extra minutes won't rescue you from a plateau. What will: switching up your routine every 28 days--before you have a chance to stagnate. "It takes four to six weeks for your body to adapt to a workout," says Cosgrove. "Once it becomes efficient at it, you use less energy and burn fewer calories and fat." The good news is, you don't need to completely overhaul your fitness routine every month, says Cosgrove. Even simple tweaks--say, adding a few hills to your daily run--can make the difference.

Why Gym Classes Work So Well

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