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Bret "Glute Guy" Contreras PhD on Instagram: “How to Pump it Like a Frog 🐸 When I first posted about frog pumps… | Glutes, Glute activation exercises, Exercise
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Bret "Glute Guy" Contreras PhD on Instagram: “I thought up a new way to glute bridge or 🐸 pump with bands last night. It's very hard t… | Glute bridge, Glutes, Phd
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