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The Barbell Spin
Oct 22, 2026 · 3:32pm
2027 CrossFit Games Season Structure, Rogue Invitational Preview & The Glass Box author, Calum Marsh
On THE SPIN, Calum Marsh joined the show to talk about his new book, The Glass Box, coming out on October 27 (buy on Amazon). In the book, Marsh documents the history of CrossFit – from when Greg Glassman trained clients out of globo gyms to the Black Box Summit to the rise of th
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