The annual Muscle Milk Fitness Retreat always brings out some of the best trainers in Hollywood—and the chance for SHAPE fitness editors to sweat beside stars! During this year's event, we took a Pussycat Dolls dance class with Robin Antin, a Rock Bottom Body session with Teddy Bass (who’s sculpted Cameron Diaz), and punched out our aggression during a BodyBox class with Audrina Patridge’s go-to guy, Jarret del Bene. Want a taste of the celeb workout treatment? Try these three lower-body moves—courtesy of three celebrity trainers at the Muscle Milk Fitness Retreat.
Workout details: Perform one set of the prescribed number of reps for each exercise without resting in-between, and then repeat the entire circuit one more time.
Lower-Body Exercise 1: Side Step
This lower-body blaster comes straight from trainer Andrea Orbeck, whose celeb-client roster includes Heidi Klum, Karolina Kurkova, and Amanda Bynes.
Body parts: butt and thighs
How to do it: Stand with feet together and hands clasped in front of your chest. Push off left foot and hop to the right [shown], landing with weight on right foot. Immediately repeat in opposite direction. Continue, quickly hopping from side to side for 1–2 minutes total.