My best dreaming happens when I get 8 hours of sleep every day, or more. If I can get 10 hours of good sleep the last couple hours are all spent dreaming. It gets to be really easy to recognize that I am dreaming, while still in the dream. It is an ability I want to learn to do better, called lucid dreaming. When it happens I like to practice flying.

So it only happens a couple of times per year.