Day 5 in Polyphasic Sleep ChallengeApril 1, 2018 in Polyphasic Sleep Challenge tagged challenge / polyphasic sleep / sleep / sleep cycles by Armin Day Fifth in Polyphasic Sleep ChallengeFifth day in Polyphasic Sleep Challenge. “Damn I cheated!” Yes, I fell off from the schedule. How could I let it happen? Watch the video and find out. [adzbuzzer]Read more about the challenge itself.