After having being spared elimination twice on The Amazing Race, Bill and Cathi Alden knew their time was up when they lost an hour trying to find the homing pigeon location in Belgium. "We had so much trouble trying to find the wall and we couldn't imagine that another team had that much difficulty after they located the pigeons," Cathi tells TVGuide.com. "We were pretty sure we were last. It was so dark and late by then." But getting lost wasn't the only factor in their elimination. See what else they think contributed to their demise and how they stay in such great shape.