Back-to-back meetings after big

Decision fatigue is a measurable phenomenon. The the part of your brain that handles decisions and focus, which is responsible for reasoning, attention, and judgment, draws heavily on glucose and runs less efficiently the longer it operates without recovery. After several hours of consecutive meetings, the quality of your thinking and the quality of your decisions both decline, even if you don't feel noticeably tired. Most people mistake that decline for a personality trait rather than a physiological one.

What is happening

Glucose management is the first lever. Your brain consumes a disproportionate share of your body's glucose, and when blood sugar drops mid-morning or mid-afternoon, cognitive performance drops with it. High-sugar snacks cause a spike and crash that makes the problem worse. A small amount of complex carbohydrate paired with protein, eaten between meetings rather than during them, keeps glucose supply steady and helps reduce the risk of the dips that show up as distraction or slower processing.

Electrolytes matter for a different reason. The nervous system uses sodium and potassium for signalling, and even mild depletion can make focus feel less sharp. Staying hydrated with electrolytes rather than plain water keeps that system running properly through long meeting blocks. Dehydration is one of the most common and least recognised drivers of poor concentration during desk-based work.

What to do next

The practical approach is simple: keep electrolytes at your desk, eat before you're hungry, and supports five minutes between meetings as a non-negotiable reset rather than a scheduling gap to fill. Those small interventions make a significant difference to how you feel and perform in the final hours of a heavy day.

Sources: WHO stress guidance, NCBI sleep stages, EFSA water guidance, Scientific Reports breathwork a combined review of multiple studies.

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