The other day I was speaking to my niece, who lives abroad, on the phone, not something we do regularly, and she asked how I was. ‘Tired,’ I answered. ‘You’re always tired,’ she sighed back. And she’s right. But there’s generally not much else an insomniac can say.

While some people seem to manage on just a few hours of sleep (lots of politicians only get four to five hours, apparently, including Trump,  but I’m not sure that’s worked in his favour as he doesn’t make much sense most of the time), if I get less than six hours too many days in a row, my brain switches off.

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