I was a multisport burnout, searching for a new challenge, when a Web trawl served up a fitness program I’d never heard of: Kokoro Camp, a civilian version of the infamous Hell Week that the Navy uses ...

This article is by Tony Clement, vice president, analytics, at Big Spaceship. “The most intense fitness program.” That is how Outdoor Magazine describes the Kokoro Training event. It’s a 50-hour ...