I know that avocado is okay to eat between meals if we experience hunger, but what is the reason why we shouldn't eat avocado before a meal?

You can have avocado with or between meals with the exception of having it before meal one. We want you to do your cardio on an empty stomach, triple fat burn! Body is still burning fat and we don’t want to turn that T-Rex off by having an avocado before it’s time for meal 1