Check out these 9 tips and give the included workout a shot for the ultimate upper chest development! – http://muscle.ms/9Chest_ pic.twitter.com/8917PDMfQl

Check out these 9 tips and give the included workout a shot for the ultimate upper chest development! – http://muscle.ms/9Chest_ 

First seen here > https://twitter.com/Muscle_Strength/status/879837000198696961

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