Strengthen Your Core in 5 Minutes | How to Do a Perfect Plank

5-Minute Core Workout Ideal for busy days, this quick, do-anywhere routine works your core without a single crunch! How to Do a Perfect Plank Master the plank! Learn how to do a plank correctly, plus 4 variations and some common mistakes to watch for. Shorten Workouts Without Sacrificing Results Can't find time for a long workout? Here are 4 ways to cut time while still making progress.   Follow us! Copyright 2014 MyFitnessPal, Inc. To unsubscribe or change your email preferences, click here. MyFitnessPal, Inc. | 525 Brannan Street, San Francisco, CA 94107

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