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Stars Play the Field!

Kim Kardashian! Jonas Brothers! Reese! See who's coming out swinging – and scoring a workout. By Serena Kappes

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MARIO LOPEZ

It's the Hottest Bachelor turned hottest pitcher! The buff Extra host – who's written his own exercise book – winds up for the first pitch at the Los Angeles Dodgers-New York Mets game at Dodger Stadium on May 18.

I Really Love My...Fitness Routine | Justin Timberlake

I Really Love My...Fitness Routine

Stars (Justin! Kate Hudson!) commit to their favorite exercise routine

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