In the 35 years I've been a climbing guide and taught on indoor walls, and stuff like that, the most important thing I've learned was, guys will always try to do pull-ups.
35年来，我一直从事攀岩指导的工作， 教授室内攀岩，等等。 我学到的最重要的事情是 小伙子们永远要尝试引体向上。