"I don't really consider this a "drug" as your body isn't producing any hormones or chemicals to induce this feeling."
I beg to differ, IME and learning, when it comes to the human condition, almost everything consciousness has a mechanism, and neurotransmitters and neurohormones are the doorway to this. I know what extra gaba activity feels like....those delta waves...yessir...very relaxing and gabaergic methinks.