Our ancestors regularly were getting 7-9 hours of sleep and even naps in-between. Compared to us that is far more sleep than the average person is getting in the modern, Industrial world. We were meant to wake up gradually through the introduction of natural sunlight. There is nothing natural about forcing yourself to wake up with an alarm clock, early in the morning while it's still dark outside, forcing yourself to eat and use the bathroom all under 10 minutes and immediately rush to traffic, arrive at work and immediately be productive.
The truth is you wake up to high cortisol levels that cause additional stress for you. You dread every morning and drag yourself out of bed. There is nothing noble about this, it's a system designed with only productivity and output in mind, not taking into consideration the individual that is actually going through it. It is cruel, cold and relentless.
I also cannot tolerate it when the same people talk about health or how to maximize it. It makes no sense to do this to your body every morning and then give a motivational speech about being healthy. It is absolutely certain that waking up early in the morning and being healthy do not align with each other