Hi and welcome to the Chiari forum.
Congratulations as you are a minority not having any symptoms and for 3 yrs....that is fantastic.
What is MMA?
MMA stands for mixed martial arts. My son used to do iit, thankfully he no longer does and is now in the navy. It's a mixture of boxing and other things. Kinda rough sport and can involve punching to the head and choke holds. I'm surely not one to give out advise but it seems reasonable to assume it could deff trigger symptoms and perhaps injure your surgical site. If it were me I would avoid it at all costs
Thanks for filling me in on what that stands for....I agree avoid that one....wow ....deff not a good idea.Especially since you are doing well...I would not want to chance it.