GLOSSARY

Fluid Intake is fluid consumed, with the record specifying beverages alone or additional liquid foods.

Water comes from more than plain drinking water: milk, tea, other beverages, fruit, soup and moist foods contribute. Total water intake therefore differs from beverage volume alone. Sugary drinks also supply energy that should match fueling needs. A product's water content by itself does not establish it as the best choice for every training situation or justify unnecessary calories.

Daily need includes water from food and drinks and varies with activity and unusual losses. Population reference values provide context, but total-water guidance must be distinguished from beverage-only advice. Rest days and prolonged exercise differ. Kidney or heart disease can also make an ordinary sports drinking plan inappropriate, requiring clinical guidance rather than simply adopting a higher athlete intake target.

Fluid needs depend on body size, exercise duration and intensity, clothing, environment and access. A fixed prescription for everyone, or automatically adding water whenever fatigue appears, misses these differences. Records from comparable sessions, drinking, body-mass changes and gut tolerance guide adjustments. A plan for a hot endurance session does not automatically fit a short cool workout.