I agree with you! We have to find our own rhythms. For over 30 years, I raised 4 children and was up at the crack of dawn every morning. After my last one left for college, I decided I’d learn the natural rhythm of my body. It turned out a waking time of 7:30 am. I also discovered writing worked well for me from the hours of 4:00 pm (after work) to 8:00 pm. I enjoyed this article and it validated my own course of action!