Take time to wind down before bed: It could just be 30 minutes before you want to go to sleep, doing things that don’t stimulate the brain—relaxing things, like having a warm shower or listening to some brown noise as you’re getting ready for bed. I’ve had clients who worked in London and were coming home after a long day, getting straight into bed, and expecting their body to just turn off because they felt tired—but their mind was still buzzing with ideas and their nervous system was still on high alert. Stephanie Romiszewski, founder and sleep physiologist at Sleepyhead Clinic and re:sleep, and creator of a BBC Maestro course in “mastering sleep”