Fantasia Of The Unconscious by D H Lawrence Chapter 14 Page 41

We do ourselves great damage by sleeping too long into the day. The half-hour’s sleep after midday meal is a readjustment. But the long hours of morning sleep are just a damage. We submit our now active centers of upper consciousness to the dominion of the blood-automatic flow. We chain ourselves down in our morning sleep. We transmute the morning’s blood-strength into false dreams and into an ever-increasing force of inertia. And naturally, in the same line of inertia we persist from bad to worse.

With the result that our chained-down, active nerve-centers are half-shattered before we arise. We never become newly day-conscious, because we have subjected our powerful centers of day-consciousness to be trampled and wasted into dreams and inertia by the heavy flow of the blood-automatism in the morning sleeps.