You might think about consulting your primary care doctor regarding the quality of your sleep. As many people have discussed in this forum, quality sleep is sometimes not easily achievable. e.g. sleep conditions like sleep apnea may interfere with you obtaining enough quality sleep. Myself, I believe my sleep quality may relate to my slow heart rate at rest. When I get up too quickly, the blood is not able to be pumped quickly enough to my brain and my motor skills are compromised. Consequently, not enough oxygen can be pumped to my brain to allow me to 1. fully alert, 2. have all senses under conscious control, and 3. be able to stand up without feeling unsteady on my feet.

That has been my experience.Take what you like and leave the rest behind. Take care.