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Reference

Protocol Glossary

Science-backed definitions for every term in your health data: plain English and the mechanism behind it.

Nutrition

Insulin Resistance

When your cells stop listening to insulin: the metabolic dysfunction behind energy crashes and fat gain

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Nutrition

Leucine Threshold

The minimum leucine dose that triggers muscle protein synthesis, and why meal size matters

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Nutrition

Metabolic Flexibility

Your body's ability to switch fuel sources: the difference between steady energy and crashes

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Nutrition

Total Daily Energy Expenditure (TDEE)

The total calories your body burns in 24 hours

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Nutrition

Basal Metabolic Rate (BMR)

Calories your body burns at rest just to stay alive

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Nutrition

Exercise Energy Expenditure (EEE)

Calories burned during formal exercise, often overestimated

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Nutrition

Lean Body Mass

Total weight minus fat, the mass that drives your metabolism

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Nutrition

Body Fat Percentage

Fat mass as a fraction of total body weight

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Nutrition

Thermic Effect of Food (TEF)

The calories your body burns digesting what you eat

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Nutrition

Non-Exercise Activity Thermogenesis (NEAT)

The calories you burn moving without trying to exercise

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Nutrition

Blood Sugar Regulation

How tightly your body controls glucose all day

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Nutrition

Glycemic Index (GI)

How fast a food raises blood glucose

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Nutrition

Energy Availability

Calories left for recovery after training cost

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Nutrition

Body Composition

The ratio of fat mass to lean mass

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More terms added regularly. Check back for new entries across all categories.

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