[rapjr9]

As people get older polyphasic sleep often becomes their norm, they sleep when they are tired, and are awake when they are not, especially if they no longer have a job. If you have to interact with people (sign for packages for example) it can be a problem, but if you don't it seems about the same as normal sleep to me. Being forced to change sleep schedule constantly does cause health issues, but just doing what your body tells you seems to work out ok in my experience. Taking drugs to force sleep to a schedule seems like a worse option.

One drawback to it is that many sleep trackers don't handle it well. They'll treat a second sleep as a nap for example and then pester you that you're not getting enough sleep. The Galaxy G5 seems to capture all sleeps fairly well (but it loses pairing every few months and has to be reset from scratch), the Oura Ring sometimes catches 2nd or 3rd sleeps as naps and adds them to the total, the Xiaomi Mi7 Band often misses shorter sleeps or lists them as naps without adding them to the total. The Android app "Sleep as Android" is started and stopped manually so if you can remember to do that it works well.