1. Apparently everyone in Santa Cruz goes to bed early and gets up early.
2. I would have expected bigger jumps on the hour. Maybe I'm the only one that sets my alarm on the hour though.
3. Why would there be dips in the AM? People hitting snooze perhaps?
4. How long do you have to moving for UP to think you're awake? How long do you have to be still for the UP to think you're asleep?
Probably some selection bias at work here. It's possible the type of person who's buying and wearing personal fitness monitors is also the type of person who gets up early.
> Maybe I'm the only one that sets my alarm on the hour
Probably my OCD coming out but I only set my alarm with minutes beginning 0-4 and ending with 8. I'm sure everyone has their own habits. On the hour seems so numerically boring!
1. People who are fit (or want to be)
2. People who are technical (or are interested in quantified life in general)
Technical people who commute from SC to Silicon Valley have far less bus options and routes than SF (SC has three each way for Google which ends at 9:25). That forces a lot of the number 2 people awake earlier than they otherwise would be.
I think SC is probably the same, if not average getting up later than other Bay Area places, due to the large student population and short walk/bike commute for those who work in the town.
I assume most of the UP-wearers will use the "smart alarm" function on their wristband that will wake them at the "optimal moment" in their sleep cycle.
What I'm guessing is that people in areas of higher population density stay up later and get up later on average. The 25-50 and 50-75 mile bands seem to contain the big urban centers, while the 0-25 and 75-100 bands are more the suburbs, small cities and rural areas.