> if you haven’t done any work before you’re better off joining a gym

I also find it really helpful to do classes where the instructor helps you understand the right form. Lifting heavy things can lead to injury if you do it wrong.

Absolutely, classes were the magic bullet for me. I found a gym that offers small-ish (~15) classes, approachable instructors who emphasize good form, and a location and schedule that fits my lifestyle. Thanks to that, I've been a regular for the past few years now, going to class 3 or 4 times a week after being a lazy slob during the height of COVID.

Classes also reduce the barrier to start because you don't have to think about what your workout will look like, and you'll push yourself just a little harder when you're exercising with others.