Pretty much everytime I became lucid, dream was very dark and blury, and so I would always get back to normal dream.
So, I tried to spin in dream (to stabilize and make dream more real) and I woke up, and that kept happening for about 3-5 times me getting lucid, so I decided i should give a try to hand rubbying - AND I WOKE UP AGAIN.

Could somebody please tell me why is this happening ?