Here is a great article in the Seattle Times about a crazy French buddy of mine Dimitri Kieffer. He and another adventurer just became the first to cross the Bering Straight on foot. I first met Dimitri during a local adventure racing group training years ago. After an entire day of trekking/running he and I were the only ones in the group interested in another 12 hours of mountain biking in the rain. That was the first time I had ever witnessed someone actually falling asleep while riding a bike.