Us Weekly, March 2005—Hot Star Workouts

Yoga Booty Ballet

What it is: A regularly sold-out class at Swerve studio in West Hollywood ($13 for a 60-minute session) combining meditation (15 minutes), yoga (10 minutes), ballet (10 minutes) and 25 minutes of "crazy-ass dancing," cocreator Gillian Marloth tells Us. (Students groove to Usher and Britney Spears.) What I Like About You costars Alison Munn, 30, and Amanda Bynes, 18, shake it about four times a week.

Benefits: "The workout promotes the creation of bone density, strengthens muscle and burns fat," explains Marloth. Best of all, she says, "it makes a nice bubbly muscle in the booty!"

Testimonials: "I feel like I'm starring in my own music video," Munn tells Us. Adds Bynes, "We just try to do anything that's fun."

Click here to download Us Weekly's "Hot Star Workouts" article.