Is there any actual evidence that anyone has ever been able to stick to one of these polyphasic sleeping schedules for a long period of time? All I ever hear a

Is there any actual evidence that anyone has ever been able to stick to one of these polyphasic sleeping schedules for a long period of time? All I ever hear about it is vague unsubstantiated claims about how a bunch of really smart people did it their entire lives and stories about how people tried it for a week or two and then stopped.