I would bet the rage creates more of an adrenaline rush than improved blood flow. It would be like an energy drink or hit of caffeine. A rush of blood pressure pushing blood to your head would not last long and often include a headache or sense of pressure that would subside as soon as your blood pressure returned to normal. Adrenaline can last for hours and have residual effects.

Do you consume caffeine?

If you are getting good sleep with all of the stages, you would wake up refreshed and ready to start your day. You would likely have good dreams and remember them. If your dreams are stressful, that would suggest poor quality sleep.