How to adjust your body clock when clocks go back

Summarised from Evening Standard's report · Updated 25 Oct, 07:32 · Archive

The clocks went back on 26 October 2025, and experts warn the time change disrupts the body's circadian rhythm.

The clocks went back an hour on 26 October 2025, at 2am on the last Sunday of October. Whilst people gain an extra hour in bed, experts caution that the time change disrupts the body's circadian rhythm—the internal clock that regulates sleep, mood and metabolism.

The circadian rhythm is primarily driven by exposure to light and darkness, helping align bodily functions with the environment. Autumn's time change may feel more disruptive than spring's because the resulting darkness reduces natural light exposure in mornings, making it harder for the body to feel awake during daylight hours. Nutritional therapist Maz Packham explains that even a 60-minute shift can impact how the body adjusts to these changes.

Read the report

• How to avoid 'jet lag' when the clocks go back and reset your body's rhythmYou may gain an hour’s sleep, but if you’re left feeling a bit ‘off’, here’s how to kick the jet lag feeling and keep your health on trackEvening Standard · 25 Oct, 06:23

In this story: Evening Standard · Maz Packham

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