Practical, evidence-based nutrition guidance: macros, meal timing, hydration and how to fuel your training.
What to look for
Each entry below covers one nutrition fundamental — what it is and what published position stands, guidelines and NIH fact sheets report about it, with no editorial spin. Every page ends with references linking to the original sources so you can read the evidence yourself.
Top picks
Nine nutrition fundamentals, each summarised from published sources.
Fundamentals
Energy Balance & Calories
How body weight responds to calories in versus calories out, as reported in the ISSN position stand on diets and body composition.
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Protein
The macronutrient that builds and repairs tissue, covered by the ISSN position stand on protein and exercise.
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Carbohydrate
The body's main training fuel, with intake ranges published in the joint ACSM/Academy/Dietitians of Canada position statement.
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Dietary Fat
An essential macronutrient for hormones and cell membranes, with published intake guidance from the Dietary Guidelines and the joint sports-nutrition position statement.
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Hydration
Fluid needs before, during and after exercise, covered by the American College of Sports Medicine's position stand.
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Nutrient Timing
When to eat around training, covered by the International Society of Sports Nutrition's position stand on nutrient timing.
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Dietary Fibre
The indigestible carbohydrate linked to heart and gut health, with intake targets published in the Dietary Guidelines.
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Vitamins & Minerals
The micronutrients the body needs in small amounts, documented in the NIH Office of Dietary Supplements fact sheets.
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Energy Availability & RED-S
What happens when athletes chronically under-eat for their training load, per the IOC consensus statement on RED-S.
Learn more ↗This section reports what published research says; it is general information, not medical or dietary advice. Speak to a qualified clinician or registered dietitian before making major changes, especially if you take medication or have a health condition.
