This Technique Worked! - But I Can't Find The Thread

[successfirst]

Can you help me find this thread explaining this technique to become lucid? I can't find it! I read it a while ago. The technique is something along the lines of waking up after a few hours of sleep, lying down still for a few minutes, and then quickly trying to physically sit up in bed. But it will not really be your physical body sitting up, but your astral body. I remember them stressing the point that you should actually try to sit up with your physical body, although it will not be your physical body. When I first tried it, it worked! But I can't remember exactly how he/she explained it. Does anyone know what I'm talking about?