Why a Lunchtime Walk Matters More in November, and How to Catch the Light You Have

By the middle of November the day has a different shape. In London the sun is up a little after seven and gone again not long after four, which leaves around nine hours of daylight. If you work indoors, it is easy to arrive in the half-dark, leave in the dark, and spend the bright part of the day under a ceiling light. A short walk at lunchtime is one of the simplest ways to catch some of the light that is left, and there are good reasons to think it is worth the effort.

Daylight is the main signal your body clock uses to set the day. Light in the morning and around the middle of the day helps it keep time, which in turn shapes when you feel alert and when you start to feel sleepy in the evening. Even an overcast November sky is far brighter outside than a typical office or living room, so a few minutes outdoors gives your clock a much clearer cue than an afternoon by the window.

There is also some large-scale research behind the idea. In 2022, Angus Burns and colleagues published a study in the Journal of Affective Disorders using data from more than 400,000 adults in the UK Biobank. People who reported spending more time in outdoor light during the day tended to report fewer symptoms of low mood, better sleep and fewer symptoms of insomnia. The median time outdoors in daylight was about two and a half hours a day.

It is worth being honest about what that study can and cannot say. The hours were self-reported, and the findings show an association rather than cause and effect. The authors noted that the link may run both ways, since feeling low can make you less likely to go outside in the first place. So this is not a promise that a walk will change how you feel. It is a gentle nudge that time in daylight sits alongside better sleep and mood for a great many people.

In November, timing matters more than it does in summer. The light that remains is concentrated in the middle of the day, so a walk at half past twelve catches far more of it than a walk at half past four, when the street lamps are already coming on. If you can only get out once, the hour around lunch is usually the brightest one you have.

It does not need to be long or purposeful. Ten or fifteen minutes around the block, a loop of the nearest park, or a slow walk to buy something you do not strictly need is enough to count. Leave the headphones in your pocket for part of it if you can. Listen to the wind in the bare trees, the leaves under your feet, the gulls or the rooks overhead. Looking up at a pale sky after a morning at a screen is a small rest of its own.

On days when you cannot get out, sitting near a window for lunch, or taking your call by the brightest window in the house, is still better than a dim corner. And if the darker months are weighing on you more than usual, or your mood stays low for weeks, please talk to your GP. A walk is a kind habit, not a treatment.

When you come back in, it can help to keep a little of that outdoor quiet with you. Make a calm zen on Create Your Zen: wind through a forest, or a light rainfall, kept low while you settle back into the afternoon. Press play, and let the walk carry on a little longer.