Journalist Calum Marsh studies the rise of CrossFit under its former CEO

NPR · 1:57

2,855 views · 66 likes · Oct 28, 2026

Journalist Calum Marsh studies the rise of CrossFit under its former CEO Greg Glassman in his new book “The Glass Box: The Shocking True Story of How CrossFit Broke the Rules, Made Millions, and Changed Fitness Forever.”

Listen to the full conversation with the link in bio.…

Journalist Calum Marsh studies the rise of CrossFit under its former CEO Greg Glassman in his new book “The Glass Box: The Shocking True Story of How CrossFit Broke the Rules, Made Millions, and Changed Fitness Forever.”

Listen to the full conversation with the link in bio.…

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