I used to do free weights, but definitely lost the knack for it when I was ill and just now starting to get back into trying. It seems to me to be about 10 times more exhausting than it used to be.
I can't do gyms, I'm much too self conscious and the environment is just hostile to me, so I prefer to do it solo.
There is a weight lifting idea which just utilises the weight of your body which I can't recall the name of, but parts of that seem to be useful too.
I'd definitely like to see some results from it! They say autistics are often low on muscle mass and I'd say that's true of me.
that would be calisthenics. and if you could work up to something like 20 pullups in a row your body would definitely reflect that
. theres alot of other stuff too like dips and stuff