So what does this mean for us? Firstly, if you are someone who often finds themselves berating the decisions they made, it’s useful to know that it could be down to your sleeping habits rather than intrinsically favouring silly choices.

But it’s also a call to focus on improving quality sleep, as well as quantity. Researchers in this study didn’t change any of the sleeping habits of the participants, saying that we all have a unique sleep ‘fingerprint’, meaning our bodies tend to consistently favour different waves and depths of sleep. So it was our natural fingerprint that was associated with risk-taking habits. But it doesn’t mean it’s unchangeable.

Sleep and decision making: here’s why deep sleep reduces risky behaviour