Srila Prabhupada's memory and sleeping habits were amazing. I observed his so-called sleep every single day in those last six months. When Srila Prabhupada slept he would close his eyes, usually fold his hands across his chest, and relax his mouth slightly. I never heard him snore. But when he awoke, I never saw any grogginess. His eyes would open calmly, and he would be fully alert. There was no intermediate period, which I found very surprising, especially considering his condition, how little sleep he got, and all the physical traumas that he underwent, like surgery and traveling in bad conditions.