Exactly when UK clocks go back as expert says ‘avoid one drink’ after 2pm

Most of us will be able to enjoy an extra hour of blissful rest in our cosy, warm beds next week when the clocks go back. This year, the clocks will go back an hour at 2am on Sunday, October 27, in the UK, marking the end of the British Summertime.

Although many of us may be rejoicing at the thought of additional sleep, this time shift can have a big impact on our daily rhythms, mood, behaviour and overall mental health. We have spoken to the experts, who have explained why this happens, and have offered some guidance about how we can prepare for this change. What impact can this have on our minds and bodies?

“Our body clocks – otherwise known as circadian rhythms – are linked to a central circuit called the suprachiasmatic nucleus (SCN), which is sensitive to light and sends signals to the brain which can have major influences on some bodily functions,” explains Theresa Schnorbach, sleep scientist at Emma. “This means that any change to our light exposure can disrupt our sleep-wake cycle. It can take some time for our bodies to catch up to these changes and can impact us physically, even affecting the regulation of our core body temperature and blood pressure.”

The dwindling daylight can have a significant impact on our mood. “It can exacerbate symptoms of Seasonal Affective Disorder (SAD), a type of depression that occurs seasonally,” warns Antonio Kalentzis, psychologist and British Psychological Society committee member. “Individuals with SAD may experience significant mood deterioration as daylight hours decrease.”

He adds: “Furthermore, the sudden shift in time can heighten anxiety and depressive symptoms among those predisposed to mood disorders. Moreover, it can also impair our cognitive functioning.”

“Sleep deprivation from the time change can impair cognitive functions such as attention, memory and problem-solving abilities. The loss of sleep can result in increased accidents and decreased performance in various activities.”

He advises preparing your mind and body for the clock change by gradually adjusting your sleep schedule. “Begin by shifting your bedtime by 15-30 minutes earlier each night leading up to the change,” suggests Kalentzis. “This gradual approach allows your body to acclimatise to the new schedule without the shock of a sudden change. For example, if you typically go to bed at 11pm, aim for 10.45pm for a few nights, then 10.30pm.”

He also recommends avoiding napping. Meanwhile, Schnorbach advises: “The clocks going back can leave you feeling drowsy during the day, but it’s important to avoid napping whenever possible, especially in the hours directly before bed. Taking naps throughout the day breaks down a substance called adenosine, which is produced by the body as it consumes energy, which helps to turn up sleep-inducing regions in the brain and increase the urge to sleep at night.”

Dr Lindsay Browning, psychologist and sleep expert for And So To Bed, suggests adjusting your meal times: “You could try moving your breakfast, lunch and dinner a little later each day too, since the timing of mealtimes also has an impact on our internal clock.”

Schnorbach also recommends changing your light bulbs: “You can help support sleep by changing bulbs to a warmer colour (or to red if you have colour-changing light bulbs) in the hours before sleep. A 2012 study showed the effectiveness of red light therapy exposure in increasing melatonin levels and boosting quality of sleep.”

Browning advises cutting down on your caffeine intake during the afternoon: “Try to avoid caffeine after about 2pm. Caffeine has a six-hour half-life, which means caffeine is still in your system many hours after your last drink.”

Kalentzis explains the importance of maximising your exposure to natural light: “Exposure to bright light, especially first thing in the morning, can help your brain to wake up. Light exposure is crucial for regulating circadian rhythms and can improve mood and cognitive function.”

Steer clear of bright lights at night from phones and laptops. “Practice good sleep hygiene by avoiding bright lights in the evening from your phone and laptop, as these can disrupt your natural production of melatonin,” advises Browning.

Maintaining social ties could be your ticket to a better mood. “Engaging in social activities can provide emotional support, enhance mood, and combat feelings of isolation that may arise from decreased daylight,” Kalentzis shares, emphasising the importance of a supportive circle for mental health.

Make time for mindfulness to keep stress at bay. “Techniques such as meditation, deep breathing exercises, or yoga can reduce anxiety and improve sleep quality,” suggests Kalentzis. Regular mindfulness can cultivate greater emotional balance and resilience amidst life’s pressures.