I CANNOT nap at all or even sleep when I'm not supposed to even if I would be tired. Quite frustrating as I really would like to achieve WILD and eventually astral projection / OBE.
In fact I would go as far to say I am not a good sleeper, I attempt WBTB literally everyday (yes I go to school) and sometime It ll take me 40 - 1hour + to fall asleep even after listening to deep delta/theta binaural beats