Question: Is it wrong to protect my competitive advantage in a sport by refusing to share information? I am an aspiring MMA fighter. I've done a lot of work studying personal fitness, how to prevent and fix personal injuries, and how to maximize force output. I recently signed up for an MMA gym to prepare for some amateur fights. I'm concerned that when I do non-conventional "stretches" before or after a workout I'll get questions from curious people. Then I'm in a dilemma. I would like to make friends, but I really don't want to give away for free my knowledge that I have worked hard to achieve – knowledge which gives me an edge over many competitors. I don't want to tell them where I got this information either. Perhaps if they ask what I'm doing, I could say "trade secret" or something else. Ultimately though, I don't want to give potential competitors the tools that will help them beat me. Is this legitimate? Is it immoral or unwise?
Question: What is the proper judgment of very violent sports and people's enjoyment of them? By "very violent sports," I mean ultimate fighting, boxing, etc. – where the objective is to draw blood or beat your opponent senseless. Is this proper entertainment for a rational person?