Favorite Mass Building Chest Workout | IFBB Pro Regan Grimes

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Add thickness and mass to your chest with this beast-tested, IFBB pro bodybuilder-approved pec blast from Primeval Labs-sponsored athlete Regan Grimes.
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Looking to switch up your chest routine and put on some mass? Regan Grimes, IFBB pro bodybuilder and Primeval Labs-sponsored athlete, is here to show you how.

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