In this episode of One Health Tweak a Week, we zoom out from individual habits - bedtime, breakfast, evening screens - and look at the bigger system they all feed into: your body’s internal clock.

We’ll walk you through what circadian rhythms are, why you have one master clock in the brain and lots of local clocks in organs like the liver and gut, and why health isn’t just about what you do but when you do it.

We’ll look at large studies showing that people with fragmented, irregular 24-hour routines have higher risks of dementia, stroke, Parkinson’s disease, anxiety and even early death, even when their total sleep time looks “fine”. We’ll touch on shift work, social jetlag, and why midlife is when circadian misalignment really starts to bite.

Then we bring it back to something practical: a simple way to sketch your own 24-hour rhythm so you can see where your life and your body clock are currently out of sync. No perfection, no overhaul - just observation.

If you’re someone who already cares about sleep, diet and exercise, this episode will help you connect those dots into one overlooked pillar: living in better rhythm with your body clock.

One Health Tweak a Week

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