Until infants entered the picture, my experience of sleep was one of quickly falling into it, staying there soundly, and waking each morning refreshed.  Nursing an infant every two hours will create new sleep and prayer patterns. As Adrian Reynolds discusses in his book, And So To Bed…A Biblical View of Sleep (henceforth “To Bed”), not only is sleep spiritual, it speaks of spiritual realities and can be both hindered/enhanced by spiritual conditions.