Tone Up on the Treadmill

"Save time at the gym with this 10-minute cardio/sculpt session: Hop on a treadmill holding a three- to five-pound dumbbell in each hand, and set the speed to a brisk walk. Do a one-minute set each of shoulder presses, biceps curls, triceps extensions, side laterals, front laterals and standing triceps kickbacks one after another as you walk. I's an amazing upper-body challenge that also gets your heart pumping. Do this series two or three times each week. As you improve, work up to doing four-minute sets."
--Michael George, trainer and owner of Integrated Motivational Fitness in Los Angeles

Power Up Your Runs

"Adding wall sits to the end of every run will strengthen your quads, hamstrings and glutes, improving your speed and endurance. Lean against a wall with your feet shoulder-width apart, then squat until your knees are bent at 45 degrees. Hold for 30 to 60 seconds; work up to doing 10 sets. Add a challenge by including heel raises: Lift your left heel, then the right, then lift both together twice."
--Mindy Solkin, owner and head coach of the Running Center, New York City

Chart Your Progress

"Stay motivated using a fitness report card. Jot down these subjects: Cardio, Muscle Conditioning, Flexibility and Attitude. Set goals (for example, doing 10 "boy" push-ups) and grade yourself A through F at least four times a year. When you see how much you improve, you'll want to stay in great shape."
--Ken Alan, Los Angeles--based personal trainer

Take This Jump-Rope Challenge

"The best cardio workout is the jump-rope double-turn maneuver. It's intense: You'll burn about 26 calories per minute! Do a basic jump for five minutes, then jump twice as high and turn the rope twice as fast so it passes under your feet twice before you land. This takes timing, patience and power. But you'll get in great shape just by working at it."
--Michael Olajide Jr., former number one world middleweight contender and cofounder/trainer at Aerospace High Performance Center in New York City

Paddle Your Way to Flatter Abs

"Go kayaking to get a taut stomach -- it's ideal because much of your rowing power comes from your core. Mimic the motion and resistance of the water at home by looping an exercise band around the bottom of a table leg or other fixed object. Sit on the floor with legs extended, knees slightly bent; grasp one end of the band in each hand. Rotate your torso to one side as you bring the elbow back slightly, then switch sides. Do three sets of one to three minutes each."
--Barbara Bushman, Ph.D., associate professor of health, physical education and recreation at Southwest Missouri State University