Sadly, most of us won’t ever get the opportunity to work out with Kim Kardashian or Rihanna‘s trainer, and the woman behind Shakira and Sarah-Jessica Parker‘s abs won’t ever whip our obliques into shape before summer. Instead, we asked them?and a few other fitness pros?to share their grocery-store shopping lists, which offer insight into their own eating habits. From the guy who sculpts the world’s most famous butts (Hi, Kim and J.Lo) who explains what post-workout snack will make your gym session more effective, to Drew Barrymore‘s trainer laying down the rules on how often you should be eating to avoid weight gain, these experts might make your next trip to Whole Foods that much healthier.

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