Are you able to physically relax your body when you go on rides?

I’m not a huge roller coaster guy, so I actually hadn’t gone on any rides during all of my adult life until I recently visited Linnanmäki while travelling in Finland.

I tried all the rides, but I was seriously scared for my life during a few of them, especially Ukko (someone else’s POV video).

Rationally I realize that these rides must be designed in such a way that it’s impossible to fall out even when hanging upside down, but I clearly remember feeling that if I relax my body and stop holding on for dear life, I will definitely fall out.

For people who go on rides more often, do you manage to overcome this feeling and actually relax your muscles while you’re on a ride?