In the old days, when we had the benefit of regularly receiving personal instructions from Sri Bhagavan, one of them was that we should get into a meditative state before going to sleep. If this was done, Sri Bhagavan said, sleep overtook one as a natural sequel to fatigue and was not induced or preceded by lying down. Also, we were advised to go into meditation first thing in the morning, immediately after getting out of bed. This ensured a serenity of mind and also a feeling of tirelessness throughout the day. If this was done, he said, the state of mind experienced immediately before sleep is resumed on waking.

-- Kunju Swami