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Back-to-School BodyWatch: All-Star Cheerleaders!

From Ashley Tisdale to Kim Kardashian, see which stars have squeezed in their sweat sessions on the sidelines

KYLIE & KENDALL JENNER

Kim Kardashian's kid sisters take a break from their busy modeling schedules to do varsity cheer for their L.A.-area high school. "[My family] never thought I'd be that kind of person – but I am!" Kendall told American Cheerleader magazine. Cheer competitions, with their elaborate dance routines, are major calorie torchers – check out the girls performing with their team here!