What do a firefighter, a reconnaissance Marine and an Air Force staff sergeant have in common? As the co-owners of CrossFit 717 in Lemoyne, they are turning midstaters into lean, mean CrossFitting ...

Much like Dungeons and Dragons, Renaissance faires, and sex parties, CrossFit is something that everyone has heard of — but few have an accurate understanding of what it entails and who it's for.

“That type of training works best for me. Everyone has their preferences—this or that, whatever works for them—but this is perfect for me. I’ll keep doing it in and out of camp,” he added.

I've never been a team player, nor the kind to whoop my way through exercise, but standing here in a huge south London warehouse in London's newest Crossfit space, I find myself aggressively screaming ...