[xtracto]

There was this fad of multiphasic sleep in the early 2000.

I remember, in theory you could do sleeping for 15 minutes 6 times in 24 hours.

[interludead]

The polyphasic sleep experiments

[santanna_]

I did a polyphasic sleep cycle in college (2010's) for 6 months out of necessity and it worked really well.

The way I got it to work was by meticulously tracking my REM sleep. I would have sliding 3-4 hour windows to hit REM sleep and if I didn't, it just felt like a sluggish day, not any worse than being woken up by a fire alarm at 4am or a long thursday night.