I started training my plant about 2 weeks ago and it's so bushy that I never noticed that I caused the stem to split in half. I had to remove some of the undergrowth in order to address the problem w the stem. I ended up using a wire to bring the splitted stem back together and glued the middle. Now I'm sure it's been split for a while by the look of it but my plant kept growing and the split didn't affect it? I haven't trained besides that one time a couple weeks ago and was waiting to scrog depending on how things went in flower. By fucking up lst i learned to prune lol