I am definitely an afternoon person, i spasm for about an hour on waking up and wake up at least two times every night to turn myself over so have very disturbed sleep, that and the fact i have to take duvet days to rest my bum so use little energy those days so end up awake till some unearthly hour mean i struggle to get up early in the mornings and my inability to sit up unsupported means i need to lay down by 7pm ..not to sleep but to rest my bum, put them together and my optimum time is afternoons!