It might be high-energy transitionalness (surges of motive power for fresh personal opportunities)...but I doubt it because I've never experienced a sleep shift nearly this profound.
I bet it's the 5-HTP. It's a serotonin-inspirer that I just started taking as both a sleep-deepener and a mood-enhancer (tilt-blocker). 200mg/day, as one dose ~20 minutes before bed.
I expected to feel more rested...but nothing like this! I've never heard a report of suddenly sleeping much less & feeling as or more rested.
I'm writing this down mostly because it's potentially so hugely valuable...extremely worth sharing as an opportunity for you to self-experiment. 2 hrs/day is tremendous payoff. And, it doesn't feel like a drug; subjectively, even a little caffeine feels more significant (psychoactively, experientially) than this. Many years ago, I used drugstore "sleeping pills" for a short while; those felt many many times more like a freight train than this. Vivid dreams are the biggest felt effect.
If I keep feeling so good on so little sleep, should this just become my lifestyle choice? Do you think I'm doing any damage?