He had had a stroke and his speech was somewhat impaired, but his eyes were bright, his mind was working, and we had a good last visit.

Working just an hour extra each day pushes up stroke risk by 10 per cent, according to a huge review of working patterns.

I've often seen swimmers who have been working on their Stroke Length, swimming with an impressively low SPL – let's say 12 strokes for 25 yards – but a thoroughly inefficient style.