If you‘re feeling tired over the day, maybe in the afternoon or early evening when you get home from work, go to a doctor and have your sleep monitored. You get a portable machine that reads your breathing, your oxygen level in the bloodstream and your sleeping position.

There is a chance you have sleep apnoea, and you stop breathing a few times over the course of your sleep at night, lowering your oxygen levels until your body has a suffocation reaction, over and over again. That can happen dozens of times every night and you won‘t remember any of it.