Leave your tights, weightlifting shoes and iPods at the door. In this camp, your name doesn’t go on the whiteboard. It goes on your plain white T-shirt.

This is SEALFIT’s Kokoro Camp.

“The training we give is really the hardest training outside of any military organization in the world,” says SEALFIT founder Mark Divine.

On the line to accept that challenge are CrossFitters including Mikko Salo, Kristan Clever, Rob Orlando, Tommy Hackenbruck, Caity Henniger, Jimi Letchford and original firebreather Greg Amundson.

“We do today what others won’t,” Divine says.

“We do tomorrow what others can’t,” his trainees answer...

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