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The Fit 5: Tips to Feel (and Look) Like a Star!

From Justin Timberlake and Jessica Biel's running dates to why Adriana Lima gets punchy, get the scoop on how to look fab like the stars

ENROLL IN BOOT CAMP

The Biggest Loser trainer Bob Harper motivates the NBC show's contestants to achieve their best body ever. Now Harper is sharing some of his most effective training moves in The Biggest Loser: Boot Camp DVD ($11), which features past contestants and winners working through several intensity levels of the fat-burning, heart-pumping program. Take a fitness challenge and increase your endurance with the DVD's increasingly difficult strength-training and cardio routines for a total-body challenge. Get other fitness DVD ideas on Health.com! – Maureen Harrington