[jdavid]

i don't think he meant long term procrastination, but rather daily procrastination. if you stay in bed, then you may need more sleep in your week.

once i wake up, any additional sleep is usually meaningless, i find a nap after lunch to be of much better use to me.

[ivan]

I meant short time procrastination as an indicator of sleep deficit. It's the best indicator you sleep not enough. You should pay some bill today but you can't find enough energy to do it (you can also feel strong aversion to do it) so you move this task and three other tasks to the next day. Ask yourself if this already happened.

There are some techniques by ex. some very intensive buddhist meditations (you can't perform in normal daily life) which can help you slow down your metabolism and so also need for sleep and eat without impact on your health, or techniques how to wake up exactly at 7AM (it's the best time IMO) without alarm clock.