Tired, irritable and craving carbs? Why darker days affect our bodies and brains

When the clocks go back in October, millions of Britons welcome an extra hour in bed. But by the evening, with darkness arriving before many people finish work, that small luxury may seem a distant memory.

As the days shorten, many people have fewer opportunities to spend time outdoors in natural daylight, which helps regulate our internal body clocks. kle555/Shutterstock When the clocks go back in October, millions of Britons welcome an extra hour in bed. But by the evening, with…