Joshua D. reviewed Qualia Mind
Seems to work really well when ready or studying. The only thing I would say is that I would rather the caffeine free one next time because I seem to have a lot of good energy and I want to move, so this would be better for the gym.
Almost ineffable: clarity, calm, presence & stable happiness doesn't quite capture it or do it justice, and yet obvious at the same time. Very impressed and grateful!