CrossFit is a branded fitness regimen developed by Greg Glassman. It is a strength and conditioning workout that consists mainly of a mix of aerobic exercise, calisthenics (bodyweight exercises), and Olympic weightlifting. CrossFit is practiced by members of affiliated gyms, and it is also a competitive fitness sport.
It's like, 'Oh, why do CrossFit when you go rock climbing? It's way cooler.'
""Alex Honnold mentions CrossFit in a comparative context, suggesting that rock climbing is a 'cooler' and potentially better fitness modality than CrossFit."