Got 30mins? Try this pump-inducing superset #workout designed to help build quality muscle mass! – http://muscle.ms/FastMass_ pic.twitter.com/cjLaM4QVgp

Got 30mins? Try this pump-inducing superset designed to help build quality muscle mass! – http://muscle.ms/FastMass_ 

First seen here > https://twitter.com/Muscle_Strength/status/898171609357398016

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