With the UK in the grips of 2025's first heatwave, many of us will be struggling to doze off amid the tropical heat. If you can't sleep in the heat, scientists may have a counterintuitive solution.

As temperatures drop, many people slip into bed with an extra blanket, a hot water bottle, and sometimes, with socks on. That feeling you get when your entire body is warm and cosy, but your feet are ...