How The Body Loves Rhythm

One of the things that fascinates me most about the human body is that it loves rhythm.

For a long time, I assumed that good health was mainly about making the right choices. Eat well. Exercise regularly. Sleep enough. Don't smoke. Those things matter, and they still do. Over the years, though, I've become increasingly interested in something else. Not just what we do, but when we do it, how regularly we do it and whether those choices fit the rhythms our bodies have evolved with.

Once you start looking for rhythms, they're difficult to ignore. The sun rises and sets. The seasons change. Trees don't produce leaves all year round, nor do they remain bare forever. The tides come and go. Even our hearts don't beat at exactly the same speed every second. They constantly speed up and slow down in response to what we're doing.

We accept these rhythms everywhere in nature. Somehow, we struggle to accept them in ourselves.

Modern life encourages us to live as though every day should look the same. We expect ourselves to wake with identical energy, perform equally well every afternoon, sleep perfectly every night and remain productive throughout the year. When our concentration fades or our body asks for rest, we often feel as though we're falling short, rather than simply responding to biology.

Sleep is probably the clearest example. Most people know that sleeping too little isn't healthy, but sleep is about much more than the number of hours we spend in bed. Long before we become sleepy, the body has already started preparing for the night. Hormones begin to shift as daylight fades. Body temperature gradually drops. The brain slowly changes the way it functions. Regularly staying awake until one in the morning, surrounded by bright lights and endless scrolling, isn't simply shortening the night. It's asking the body to ignore signals that have guided human physiology for millions of years.

Eating follows a rhythm too. For decades, nutrition advice focused almost entirely on what we should eat, and understandably so. Food quality matters enormously. Yet our digestive system doesn't function exactly the same way at every hour of the day. Blood sugar regulation, insulin sensitivity and many digestive processes rise and fall over the course of twenty-four hours. That doesn't mean everyone needs the same meal schedule. Shift workers, parents of young children and many others simply can't organise their days that way. Even so, our bodies generally seem to appreciate a degree of regularity.

I've noticed this in my own life as well. During the working week, lunch often ends up wherever it fits between consultations. Some days I eat around noon, while on others it's well into the afternoon before I realise I'm hungry. At weekends, without consciously planning it, I tend to eat at much more consistent times. Nothing dramatic changes, yet I often feel calmer and less rushed. It's a small observation, but one that has made me wonder how much our bodies appreciate predictability, even in ordinary things like mealtimes.

Movement has its own rhythm as well. Some mornings I wake up feeling energetic and can't wait to exercise. Other days, especially after a busy week in general practice, a walk with my dog feels far more appropriate than an intense workout. That doesn't mean every feeling should determine what we do. Sometimes we're genuinely tired; sometimes we're simply reluctant to get started. Living well isn't about ignoring those signals, nor is it about obeying them unquestioningly. It's about gradually learning the difference.

The longer I think about it, the more I notice how often modern life pushes us away from these natural rhythms. Artificial light allows us to turn night into day. Food is available almost around the clock. Emails arrive late in the evening, and our phones make it easy to keep working long after the day should have ended. There are obvious advantages to all of this, and I certainly wouldn't want to romanticise the past. But I do wonder whether we've become so accustomed to overriding our biology that we've started to forget it's there.

The rhythm of life also extends beyond a single day. Every year I notice the same pattern in myself. Summer naturally draws me outside. I walk more, swim more and enjoy spending time in the garden long after dinner. Winter feels different. I read more, enjoy quieter evenings and spend less time outdoors. For a long time I thought I should resist that change, as though maintaining exactly the same lifestyle throughout the year was somehow healthier.

These days, I'm less sure. I still try to move, eat well and look after myself during winter, but I've stopped expecting January to feel like July. Perhaps winter isn't asking us to become less healthy. Perhaps it's simply inviting us to be healthy in a different way.

That shift in perspective has also changed the way I think about routines. I used to see them mainly as a tool for self-discipline, something that would force healthy habits into place. Now I think their greatest value lies elsewhere. Routines create stability in a world that is increasingly irregular. Going to bed at roughly the same time, eating with some regularity, moving most days and spending time outdoors won't guarantee perfect health, but they create a rhythm that makes healthy choices easier and asks less of our willpower.

When I think about health now, I no longer imagine a perfectly balanced life in which every day looks identical. I imagine something closer to music. A beautiful piece of music isn't made from one note repeated endlessly. It has movement and stillness, faster passages and slower ones, moments of tension and moments of rest. The rhythm is what allows all those variations to make sense.

Perhaps our lives aren't so different. Our bodies don't ask us to be perfect every day. They don't expect endless productivity or flawless routines. More often, they seem to respond remarkably well to something much simpler: a rhythm they can recognise, and eventually, a rhythm they can trust.