Who doesn’t want a backside like Jessica Biel? InStyle has a new Workout Like a Star slideshow, which includes “star tips” from celebrities who work out:

• Jessical Biel wraps a rubber exercise band around both ankles, then takes 15 lateral steps (out and back) on each side.
• Patrick Dempsey, aka McDreamy, rides his bike around Beverly Hills every day.
• Madonna does pilates and yoga, and runs through Central Park.
• Lance Armstrong… well, you know.
• Heidi Klum does yoga several times a week.
• Bridget Moynahan power walks to music.
• Eva Longoria uses Versa Discs, air-filled cushions she stands on during squats and lunges forces abs, back, buns and legs to work extra hard to keep the body stable.

See the entire slideshow on InStyle.