The Beach Body Cinch and Sculpt Circuit Workout

This toning twofer is the perfect in-a-pinch lean routine. "It's like doing a kick-butt cardio workout, but with the added benefits of weights," says trainer Holly Rilinger, who leads her superpopular Training Camp in New York City. Rilinger designed each sculpting exercise to target your total body -- hello, bigger calorie burn! -- then added some fast-feet intervals to boost your metabolism even higher. Here's how it works: Have a pair of five- to 10-pound dumbbells handy, and after completing every two moves, go straight into a 30-second cardio blast -- for beginners, that's walking or doing step-ups; for gym regulars, that's jumping an imaginary rope or doing burpees. Catch your breath, then pick up your weights again for the next pair of strength moves. Do two circuits two to three times a week for a tight bod you'll love to bare.