In this video I go over multiple methods to train for the one arm pull up, and I cover one of the most helpful tips to achieve it. If you enjoy it, check out some of my other One arm pull up training videos.
ONE ARM PULL UP TRAINING PLAYLIST
https://www.youtube.com/watch?v=hiOTcFU1z6M&list=PLje8vw1oLZGkfnAHOf5PqRRSe9MmwJX93
The principle I discussed in the video about forearm contraction for increased CNS activation is known as Muscular Irradiation. Here's an article with some basic information on the subject so you know it's not some bro science I made up lol
https://www.muscleandstrength.com/articles/irradiation-makes-you-stronger