That's very well said, for me particularly I want to change this habit because I am at my best in the morning hours and post 3 p.m. automatically my body goes into a different mode, which I can term it as a relaxed or lazy mode, so if I am able to wake up early I will have more productive time at hand. But then yes, at the end of the day most of us sleep around 7 to 8 hours and then the rest of the time how it is spent depends on each individual