Research and advice changes as we understand more about the science of sleep, but aiming to follow a consistent pattern and routine is something that will never change. For that reason, many people wonder what the best time to go to bed is, to ensure that they wake up refreshed and revitalised the next morning. Rather than aiming for a specific bedtime because you’ve read it’s the healthiest, work backwards from when your alarm goes off. So if you need to be up at 6.30am and know you function best on around eight hours’ sleep, you’ll want to be asleep by about 10.30pm. That means getting into bed a little earlier to give yourself time to switch off.’