대기! 당신이 들은 대로 참여 하시면 전체 원고를 읽고 싶은 경우, 전체 인터뷰 전문에 먼저가 서 다음 거기에서 미디어 플레이어를 시작 하 고.
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Chris Keighley helps me muscle up the strength to understand challenge. We discuss its rewards, hazards, and how it can be a powerful tool for personal growth from day one. He shares stories from behind the scenes of the 1,000 Muscle-Up Challenge, and talks about finding challenge in more mundane activities, like building a tire tower at the Gerlev International Gathering.