This is super impractical. Although we'd all like to be able to set our own schedules there are deadlines to meet, meetings to attend and relationships to tend to. When everyone around you is working the 9-5 you've got to meet them halfway. Waking up early, eating healthful meals and exercising are good ways to do that.
And by the way, this talk about "prime time" is insane. You can get into flow whenever if you block out distraction, buckle down and are actually good at what you do.
And by the way, this talk about "prime time" is insane. You can get into flow whenever if you block out distraction, buckle down and are actually good at what you do.