Missing a Nap

Yesterday, my wife's friend needed help with her Honda Accord. I usually go straight home after work, take a shower, and then take my evening nap. Yesterday I missed it. Truth be told, I think it was more of the placebo effect than anything, but I felt incredibly tired at around 9:00 P.M. I stuck to the schedule and went to bed at 11:00, but in the morning, I was really groggy, and went back to bed for an hour. I don't feel terrible now, but it seems to be that if you cheat while on a polyphasic sleep schedule, you have to pay it back. Truthfully though, I feel like polyphasic sleep is a part of me. I'm very happy to be able to have this much time to accomplish goals, and I hope I don't waste it.