"After five years as a British counterterrorism officer and two years at Harvard Business School, Dean was determined not to follow his classmates to Wall Street or Silicon Valley. Instead, he pursued his unique vision for an extreme obstacle course: a ten- to twelve-mile gauntlet pushing participants to their limits and helping them surpass those limits together. Instead of cutthroat competition, Tough Mudder would be about continual self-improvement and collective energy"--Amazon.com.