My sleep has deteriorated imperceptibly: I have difficulty falling asleep, wake up at night, and feel exhausted in the morning. I have tried many tips, but nothing has worked consistently. I later learned that sleep is closely related to hormones, particularly cortisol and melatonin. On https://ways2well.com/health/hormone-optimization, I found an explanation of how an imbalance can affect sleep patterns. This made me stop looking for magic pills and start figuring out the causes. Now I look at sleep as an indicator of my overall health, rather than a separate problem.