Yay for training! I was a trainer years ago, but I only helped people in my home or theirs, I only had a few clients.
I'm a slow twitch too, lol.
While I was doing my studying, I signed up with a trainer for a little while to see what it was like being the client, and on the first session she was like, "some people are intimidated by the weight machines," and I was like, "no, I much prefer weight machines, I did weight lifting in high school, it's cardio I suck at" and she was like "OOOOOOOO WE'RE GOING INTO THE MAN CAVE" lol.