Is it better to sleep in cycles? Edison and Tesla tried.

Is it better to sleep in cycles? The internet claims waking at the end of a sleep cycle will leave you refreshed, but experts aren't convinced. Do sleep cycle alarms actually work? Breakthroughs, discoveries, and DIY tips sent every weekday. In an ideal world, we would all wake up in the morning feeling refreshed and ready to face the day. But if you're anything like me, you can barely pry your eyes open when your alarm goes off and your bed seems to exert a strong magnetic pull on your body.