I completely understand, you should give it a shot. All I did was just try a couple times, I'd do like 1/5th of a pullup a couple times a day, and after awhile

I completely understand, you should give it a shot. All I did was just try a couple times, I'd do like 1/5th of a pullup a couple times a day, and after awhile I could just do a little more, without any extra work. :P Hope it works out for you. I put a pullup bar where I walk past consistently, so I don't have to go out of my way to make a try at it.