All About Back Extensions
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Channel: Bret Contreras Glute Guy
Views: 197,201
Rating: 4.9317966 out of 5
Keywords: bret contreras, the glute guy, glute exercises, butt exercises, hamstring exercises, back extensions, hip extensions
Id: toJa7qvMRQA
Channel Id: undefined
Length: 16min 16sec (976 seconds)
Published: Sat Oct 18 2014
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