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It's Not Just What You Eat, but When You Eat That Matters

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21.02.2026

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Circadian-aligned eating can benefit heart health.

Eating in-sync with your bedtime can support cardiovascular recovery.

Sleep is a pillar of heart health. Aim to stop eating at least three hours before bedtime.

These days, we are often bombarded with nutrition advice. Eat more protein, cut carbs, count calories, to fast or not fast? But one part of the conversation that is largely ignored is when we eat in relation to our body’s internal clock, otherwise known as our circadian rhythm.

As a sleep scientist, I was fascinated by new research from the Northwestern University Feinberg School of Medicine that conducted a randomized clinical trial to evaluate how the timing of fasting, specifically its alignment with each person’s natural sleep-wake rhythm, can influence heart health.

Rather than simply extending the fasting window or cutting more........

© Psychology Today