What is the 1 2 3 rule in horses?
Excuse me, could you elaborate on the so-called "1 2 3 rule" in the context of horses? I'm intrigued by this concept and would appreciate it if you could provide a clear explanation. Specifically, what does this rule entail, and how does it apply to horses and their training or handling? I'm looking for a succinct yet comprehensive description that encapsulates the essence of this rule.