It is generally recommended that people get 7-9 hours of sleep per day but it is not clear that the benefits that accrue from sleep are lost if those hours are not in one block. Like many people, I often wake up very early morning before it is light outside and try to go back to sleep immediately, usually with some success unless something is on my mind that prevents me from falling asleep for some time. I used to think that this pattern of two blocks of sleep per night with a brief break was an aberration and that ‘normal’ sleep should consist of roughly eight hours of uninterrupted sleep.
[Read more…]


