On: Things to know about sleep as the clocks go back

[chillwaves]

> If you're using your brain more than the yoga teacher then it makes sense you need more sleep.

How could you possibly measure these values?

[chiefalchemist → chillwaves]

I'm not sure how you'd measure it for this example. But I can tell you "Your Brain at Work" explains how and why thinking (as abstract as that sounds here) is a finite resource.