Before HIIT and gym memberships, the Royal Canadian Air Force created a simple 11-minute bodyweight routine called the 5BX plan. But does this 1960s military workout still hold up today? Dan Koh and Neil Humphreys investigate the science behind the five basic exercises and find out whether its simple formula still delivers real results.

Friday Night at The Movies: Neil Humphreys and Dan Koh pick out their best cinematic experiences, the ones that blew them away
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Thank Fitness It’s Friday: What 3 years of fitness really taught us - Quiz edition
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That Was The Week That Was Quiz: Push ups with Dan and terrifying Neil
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