A few years ago I suffered from a condition that is called "Restless Legs Syndrome" (RLS) and it is a condition that makes your legs feels like it wanted to kick so that it will release its tension. It is a very disruptive condition because it affects your sleep.
Fortunately after I had an access to the Internet I learned that it can be cured by a drug that is naturally occurring in our brains. It is a kind of substance that gives us a relaxed mood as it has a direct effect on the brain. It is also prescribed for patients with an epilepsy but one thing it gives me is some feeling of well-being.
So after taking it for the first time for my RLS condition I immediately felt the action and then I also slept well that night. Fortunately there are parents to help me buy it in the middle of the night. And so I had been taking it until I thought that I needed to stop because the re are no more symptoms of RLS anymore.
But I noticed that without it I could not get a better sleep and it makes sleep quite stressful because I would wake up breathless and not feeling well. So intermittently I would take it at times that I needed to get relaxed and get a good natural REM sleep.