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In this segment of the YouTube video, the presenter explains the reverse fly (crucifixo inverso) as a bilateral exercise that works both arms simultaneously, contrasting it with the unilateral posterior deltoid movement that isolates one arm at a time. He highlights the machine version of the posterior deltoid exercise as “top” and “chic,” then introduces the reverse fly on the machine as a highly effective follow‑up. He also mentions that the reverse fly can be performed with dumbbells, emphasizing his personal enthusiasm and frequent use of the movement in his training routine.
