Sounds like you’ve never trained. If you want to try kickboxing or Muay Thai you’re not going to be starting out sparring. You’ll be learning the basics. That is, of course unless you’re at some dodgy ass gym that pushes everyone to spar right out of the gate. In which case you should avoid and go to a proper gym. If you’re getting many hard hits to the head in training starting out you’re doing it wrong or your partner is an asshole. Just do it. I trained with other people in IT, I remember one guy was a C++ programmer. Stop over thinking it and go for it.

Sorry, what?