Seized by a sudden desire to exercise, so I went out of the house and climbed down and up the stairs 2 times. 9 storeys! 1st time down and up was chicken, nothing much; but after the 2nd time I was really tired.

Time enjoyed is not time wasted.

I think I should sleep less.

Oh I'll go back to revision in a while.

Interesting: is this how The Hobbit was inspired? :D