I think it's important to keep your personal life to yourself as much as you can. It protects your sanity and you need to have boundaries. And it helps that enchantment of watching an actor. If you know someone's favourite colour or what they like to do on a Sunday, you won't fall for the character
Mostly I do Iyengar. I like anything that's hard enough to make me cry in class. I like to be pushed over my limit and broken down a little bit.