waking up then sleeping technique?

[Gummage]

I not been able to find out too much about this but it goes something like this: you go to bed for the night and sleep 4/5 hours then wake up and spend 10 to 20 minutes doing something whilst still tired then go back to sleep for another 4 or so hours to complete your nightly rest. This is supposed to somehow help aid bringing on AP during sleep. Possibly from a lucid dream.

Is this how it works? I want to do this technique but I don't really understand it. Do I have it right? why would waking up from sleep then going back to sleep help initiate a projection? I am confused also.

[Szaxx]

After you wake, having slept for some hours etc, you try an exit technique.
If you can become aware while in a dream this is the easiest way to take control and have an experience. Waking your awareness without waking up is tricky, the natural bodily reaction is to wake fully.
It depends on your method too. Mornings are far more successful as your body is rested and doesn't snatch you unconciously into a dream.
Find a method you like and try it for a while during the small hours.