This is probably a clear metric for our annoying friends who complain that they don’t get high enough quality sleep, but go to bed at 2 and have an alarm set for 7 every day. Sure you may have worked best on 5 hours sleep in college (though probably not), but if you aren’t "feeling well rested after waking up at least five days a week", you might try more sleep.

Some people need this advice, and a clear metric to hit. I’ve known them, and although I failed to make a dent, eventually something did. Maybe it was an article like this.

Research and summaries of research will rarely hand out advice. In recent years, there has been an explosion of content that provides practical advice on getting better sleep. Most of this advice involves habit changes, and many of these habit changes are hard (e.g. avoiding screen time for ~2 hours before bed is tough if you always watch Netflix in the evenings).

I added links as a response to the sibling comment with some practical resources, and I think it's important to recognize that work focusing on the impact of sleep or the lack thereof is not necessarily in the same category as work that seeks to provide remedies / improve sleep.

Thankfully, as we continue to learn just how important sleep is, we also continue to learn about ways to improve it.