Often my best ideas occur while running.

Then it’s handy to have an iWatch - I lift my arm, push the big red button, and start recording. As members of the phylum Chordata, our primary identity is as a ‘mover’, so it’s no surprise that moving optimises your cognitive function. Once - after a particularly effective lesson - my precious teacher Marjorie Barstow looked at her student as she walked elegantly across the room and remarked:

“Now you look like you know something.”

We all laughed because she did, which was the surprise.