Uploaded March 2026 | Updated September 2026, 2 weeks ago

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In this video, Martin Rios looks at one of the best hacks to maximize your chest fly form and build an aesthetic chest. Martin Rios goes over the importance of maintaining the stack during chest flys and how adding a box to your chest flys will transform your training.

#chest #chestflys #workout #bodybuilding #muscle #ecm