I remember an old round we used to sing at school:

He who would thrive must rise at five
He who hath thriven may lie till seven
He is a thriftless loon who will lie till eleven

I spent my youth as a thriftless loon; which was a bummer as I had school/work to get to. Nowadays, when I have no work to get to as long retired, Sods Law decrees that I generally wake between 0400 and 0500, and find the idea of getting up for a cup of tea more attractive than lying there with revolving depressing thoughts.

Ah well...

≈M≈