>>2 neat.
>>3
In my limited understanding I took delta-waves to be produced by all NREM sleep and the objective to be reducing NREM1 and NREM2 while still allowing for NREM3 or SWS sleep, and REM sleep. I've no idea what these things are though and why there would be uneccessary steps in there.
>>5 No you.
I spent a burt-out afternoon reading about this sort of thing and what I'm likely to do is just improve my "sleep hygeine" by avoiding artificial illumenation, and sleeping on my back. Rather than consciously change my sleep schedule I'm just going to more or less roll with whatever I feel like beyond trying to not deviate too dramatically at once or taking a nap in the evening or early morning.