On Sunday morning you got an extra hour in bed. By Wednesday it's dark at 5pm, you're yawning at 3, and you want to be asleep by 9 even though you're somehow waking at 5:30. Nothing has gone wrong with you. A whole country has just shifted its clocks by an hour, and your body clock hasn't read the memo.
The UK clocks went back on Sunday 25 October, and they won't go forward again until the end of March. That's five months of short, dark afternoons. You can't change the light, but you can change how your week is arranged around it, and the first fortnight is when that matters most.
Why one hour feels like more
Your body clock is set mainly by light, especially morning light. When the clocks go back, the light arrives an hour "earlier" by the clock and disappears an hour earlier in the evening. Your internal timing is now slightly out of step with your alarm, your meals and your commute, and for a few days it tugs you the wrong way: awake too early, flagging by mid-afternoon, sleepy before the evening is done.
Most people adjust within a week without trying. The ones who struggle tend to make it worse by accident: lying in at the weekend, napping at 5pm, then lying awake at midnight wondering why. A little structure for the first week stops that spiral before it starts.
Week one: hold your times steady
The single most useful thing is boring: get up at the same time every day this week, weekends included. The NHS's sleep advice puts it simply — go to bed and get up at similar times each day. A fixed wake-up time is the anchor; bedtime will follow it within a few days.
If you're waking at 5:30 and can't get back to sleep, don't fight it in bed for an hour. Get up at your normal time if it's close, or read somewhere dim if it isn't, and keep the rest of the day on schedule. If you're flagging at 3pm, a ten-minute walk outside beats a nap. A nap after 4pm will steal from tonight.
Catch the morning light on purpose
In summer, you get daylight without trying. In winter, a lot of people go from a dark bedroom to a car or a train to an office and back, and see the sun only through glass. That matters, because outdoor light is many times brighter than indoor lighting even on a grey day, and morning light is what tells your body clock that the day has started.
So build in fifteen to twenty minutes of outdoor light before mid-morning. Walk part of the commute. Have the first coffee by an open door or at the end of the garden. Take the meeting call outside. Get off the bus one stop early. None of it needs to be pleasant; it needs to be outdoors, ideally without sunglasses, before about 10am. Our guide to getting your steps up from a desk has a few ways to fit it into a working day.
If your mornings are genuinely dark when you leave the house, take the light at lunchtime instead. The middle of the day is the brightest part of a British winter, and ten minutes outside at 12:30 does more than an hour by the office window.
Make the evenings deliberately dim
The other half of the trick is the opposite: less bright light late in the evening. After about 9pm, lower the main lights, use lamps, and put the phone down for the last half hour before bed. You're not trying to be monastic. You're sending the body clock a clear contrast — bright mornings, dim evenings — so it settles into the new timing faster. If the phone is the hard part, our guide to stopping doomscrolling has a week-long plan that starts with moving the charger out of the bedroom.
Plan the dark afternoons before they arrive
The 4:30pm sunset is what gets people, not the clock change itself. The day feels over before it's done, and the evening collapses into the sofa. Two small things help.
Put something in the dark hours. One fixed thing a week after dark that isn't a screen: a class, a swim, a friend, a walk round the lit streets. It gives the evening a shape and gets you out of the house when everything says stay in.
Move the hard work earlier. If you have any control over your day, do the demanding thing in the morning while you're sharpest, and leave the routine admin for the slump. Fighting your energy at 4pm in November is a losing battle; arranging around it is not.
Food and movement: keep the floor in place
Winter makes everyone want to eat more and move less, and some of that is fine. The trouble comes when the floor disappears — no lunch, a big snack at 4pm, no movement at all. Keep a proper lunch, keep the walk, keep something you do with your body twice a week even if it's shorter than in summer. If you've found yourself tired despite enough sleep, our piece on tiredness when it isn't sleep runs through the usual daytime causes.
Winter blues or something more?
Feeling flatter in winter is very common. A smaller number of people get something more persistent: low mood most days for weeks, losing interest in things they normally enjoy, sleeping much more, struggling to get through the day, often in a pattern that comes back each autumn and lifts in spring. That's what the NHS describes as seasonal affective disorder (SAD), and its advice is clear: if you think you might have it, see a GP. It's a recognised condition with recognised treatments, and getting as much natural daylight as you can is part of the NHS's own self-help advice for it.
If your mood is very low, or you're having thoughts of harming yourself, don't wait for an appointment: call NHS 111, or Samaritans on 116 123, any time.
The short version
Same wake-up time every day this week. Outdoor light before 10am, or at lunch. Dim the evenings. Put one thing in the dark hours. Keep lunch and a walk. Notice if the low mood is more than seasonal, and if it is, talk to a GP.
That's it. The light will come back in March, and by then you'll have spent the winter with a routine that works with it rather than against it.
Related: How to Fix Your Sleep When Your Schedule Is a Mess.