is the uh latency from wakeup time to uh full alertness is that a relevant metric the other question is whether or not um the postp perenial dip is a relevant metric we established already that it's natural to feel a bit of an energetic dip at somewhere in the afternoon I think you said between 1 and 4 p.m. 1 and 4 yeah yeah something like that for me that's true between the hours of 2: and 300 p.m. um assuming all other things equal I just experienced that no matter what um but I could imagine some people are really dragging in the afternoon and they would like to know is that the normal postp perenial dip or is that a reflection of not getting adequate sleep is there any way that we could just dig into these two times of day as as a it's kind of a um a measure uh of evaluating one's duration and quality of sleep a little bit more beautiful questions I would say that one should not take necessarily either of those two as your best metric