Guess what! Rachael and my friend Damaris, who started the whole sleep thing when she had to get up earlier to take her husband to work, BOTH tried the sleep cycle deal the same night and BOTH got up refreshed and not all dopy and groggy.
Rachael did the 10:30 til 6:00 pattern. Damaris didn't have to get up till later and she did the 11:30 to 7:00. Damaris was thrilled because she got up earlier than usual but felt like a different person. She even got to work early!