GLOSSARY

Beverage Osmolarity expresses particles per solution volume, unlike osmolality's solvent-mass basis.

A sports drink usually combines water, carbohydrate and electrolytes for a particular exercise use; it is distinct from an energy drink. Plain water can suffice during short sessions with adequate food, while prolonged exercise may require both fluid and fuel. Examine carbohydrate, sodium, actual serving volume and tolerance. The product name alone does not establish that an athlete needs it at every workout.

Diluting or concentrating powder changes nutrients and particles per mouthful. Combining several powders or gels in one bottle can make a concentrated, poorly tolerated mixture. Match the label to actual water volume and rehearse the final formulation during training. Combining individually useful products does not necessarily create a better drink, and concentrated fuel does not remove the need to consider water separately.

Hypotonic, isotonic and hypertonic require a reference fluid. Sports-drink marketing often uses these terms to describe particle concentration relative to body fluids, but the label alone guarantees neither absorption speed nor stomach comfort or performance superiority. Examine actual composition, intake and exercise conditions. A concentration category is useful descriptive information, not a complete recommendation for choosing or dosing a beverage.