This year, I’ll be trying sleeping tricks to see whether they actually improve my insomnia. Because I have absolutely no trouble falling asleep, I didn’t realise for years that my 3am wakeups actually constituted a form of insomnia (sleep maintenance insomnia, to be precise). On average, I wake up in the middle of the night just under five times a week. So, I’ve been trying everything from kiwis to passionflower tea to see whether they have any benefits. Both have stuck, but what about my now months-long habit of taking a daily vitamin D supplement daily?