There are those training methods you stumble upon that seem to exceed expectations and produce results above and beyond what feels intuitive and reasonable.
The pull-up. A major staples of most training plans. Unfortunately, this humble exercise is not the ideal for developing climbing specific pulling skills.
If you ask 10 people this question, you are probably going to get 10 different answers. Fingers training? Core? More weighted pull-ups, push-ups, front levers? Visualization and sequencing?
At some point, if you get serious enough about your climbing and getting better, you’re going to start training. Then you’re probably also going to stop training for some reason and start wondering “what the hell happened”.