This article makes it sound like people have individual schedules that are somehow locked in. My experience is that my schedule changes and I can force it to c

This article makes it sound like people have individual schedules that are somehow locked in. My experience is that my schedule changes and I can force it to change. I can get on a 7am schedule or a 11am schedule by slowly forcing it. Also, there is a quiz (which I haven't looked at). Why do you need a quiz? Couldn't you just ask what time you get up on weekends?