Onset and duration stories vs the “20–24 hour” animal talking point

Origin/mechanism pages mention long behavioral windows in animals after the PGP modification, and older human volunteer notes that are small by modern standards. In lived experience, how long did any perceived effect seem to last for you—minutes, hours, next-day, or unclear? How did you avoid turning one good afternoon into a certainty? Cite papers if you lean on them. Not medical advice.