Getting Ready

Sleep does not switch on. It arrives, when the conditions are right for it. Most of the work of sleeping well happens in the hour or two before you get into bed. The body has a sleep system that runs on cues. Light, temperature, activity, food: all of these signal to the body whether it is time to be alert or time to wind down. Modern life ignores almost all of these cues. Then we feel frustrated when sleep does not come. The good news is that the cues are simple and the body responds to them reliably. Food and drink A heavy meal close to bedtime keeps the body working on digestion when it wants to be winding down. Alcohol feels like it helps sleep but disrupts the second half of the night significantly. Caffeine has a half life of around six hours: a coffee at three in the afternoon is still half present in your system at nine in the evening. Eat earlier if you can. Finish caffeine by early afternoon. If you drink alcohol, give it a few hours before bed. Temperature The body needs to drop its core temperature slightly to initiate sleep. A cool bedroom, around 18 degrees, helps this happen. A warm bath or shower an hour before bed also works, counterintuitively: the heat draws blood to the surface and the subsequent cooling when you get out triggers the drop the body needs. If you live somewhere hot, open windows once the outside air cools below room temperature, usually after midnight. A fan circulating air is more effective than one aimed directly at you. A cool damp cloth on the wrists or feet can help on difficult nights. In persistent heat, move to the coolest room in the house if you can. Light Bright light, especially blue light from screens, suppresses melatonin, the hormone that tells your body it is dark and time to sleep. In the hour before bed, dim the lights in the room you are in. Switch screens to night mode or put them down altogether. Candles or warm low lamps work with your biology rather than against it. Noise Noise is one of the harder problems because you cannot always control it. Consistent background noise (white noise, a fan, rain sounds) is easier for the brain to ignore than unpredictable noise. A white noise app or a fan running can mask street noise, neighbours, or a restless household. Earplugs are underused and underrated. A good pair of foam earplugs reduces ambient noise significantly and changes nothing about the quality of sleep. If noise wakes you rather than preventing you from falling asleep, the issue is often light sleep in the second half of the night, which is affected more by alcohol, temperature, and late eating than by the noise itself. The mind The transition from day to sleep is harder when the mind has had no transition at all. A short ritual helps: the same things in the same order each night. A few minutes of something quiet. Writing down what you are carrying so it is on paper rather than circling in your head. Telling yourself the day is finished, because it is. You do not need all of these. One or two, done consistently, will change how quickly you fall asleep and how well you stay there.