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Stars' Workout Shout-Outs

Fergie, Kelly Osbourne and more are talking up their favorite fitness tricks and must-do routines

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JULIANNE'S GROUP EFFORT

"I take classes at Equinox, and the teachers there are amazing," says Hough. " I do really well in a setting where I’m told what to do…Because if I'm by myself, I go to the gym and I do fifteen reps, and then I’m like 'Oh, my e-mail. I need to make a phone call!'"