The night before the exam, water becomes an afterthought
You can feel it: the kind of tired that isn’t solved by another highlighter color. You’ve revised definitions, memorised lists, even watched one more video “just in case.” Then you sit down to answer a hydration question and your mind goes blank because the examiner isn’t asking for a list. They’re asking for a chain.
That’s the hidden challenge of IB SEHS hydration and nutrition questions. They reward students who can explain what changes, why it changes, and how performance changes.
The IB SEHS hydration + nutrition checklist (what you actually need)
Use this quick checklist before you dive into practice:
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Water’s roles (temperature regulation, transport, plasma volume)
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Sweating and thermoregulation (heat loss, core temperature, risk)
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Electrolytes (especially sodium and fluid balance)
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Macronutrients (carbs, fats, protein) and when they matter
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Glycogen depletion and fatigue (especially endurance)
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Recovery nutrition (restoring glycogen, repairing tissue, rehydration)
If any bullet feels fuzzy, start with the syllabus-aligned hub for A.2 Hydration and nutrition, then reinforce with IB SEHS practice.
Revise cause-and-effect, not “facts”
A reliable way to score higher in IB SEHS is to write answers like a domino run. Hydration and nutrition are perfect for this because the pathways are logical.
