Is there etiquette for changing gyms or is it ok to just leave and train elsewhere? I have been off and on at a muay thai gym for the last 7-8 years. I want to learn submission wrestling and pankration now and I have found a gym that offers classes in those disciplines. They also offer muay thai classes as well. The awkward thing is that the coach that teaches there was taught muay thai by my current ajarn. However, in the last three years I haven't been going to the muay thai gym as often as I moved to another city for law school. But I am returning now. Do I owe it to my last coach to give him a heads up? Many thanks guys.