Join Up, which was first described by Monty Roberts, can be quite complex to explain. The way I like to look at it, it’s a conversation that the human has with the horse. During that conversation, the horse gets to say “no” (horses always start by saying “no” it’s just part of their hard-wiring to stay safe). They get to say “no” as many times as they want. During Join Up, the human listens to what the horse says by looking at his body language. And then responds accordingly.