Why do football players not drink water?

Watch a player jog to the touchline during a stoppage, grab a bottle, take a mouthful — and then spit it straight onto the grass. It happens in most matches, often goes unnoticed, and it is not carelessness or waste.

Players do drink water. They take on fluids at half-time, during injury stoppages, and whenever the ball goes out of play near a touchline bottle. The impression that they never drink comes from the fact that they cannot simply stop and sip whenever they feel like it — they can only reach a bottle when play has already stopped and they happen to be close enough to grab one. For long stretches of a match, that opportunity never comes.

The spitting is a separate thing. Some players take a mouthful of water or a carbohydrate drink and deliberately spit it back out rather than swallow. This is called a mouth rinse, and the reasoning behind it is physiological: receptors in the mouth appear to send a signal to the brain that energy or fluid is on the way, which can briefly lift performance. The stomach never has to process anything, and the player avoids the discomfort of running hard on a full gut. It looks odd but it is a deliberate choice, not a mistake.

The clearest exception involves Muslim players observing Ramadan. During the fast, they will not swallow food or water between dawn and sunset, which covers most kick-off times. Rather than skip fluids entirely, many will take water into their mouth, hold it or swish it around, and spit it out. This keeps the mouth from drying out and can take the edge off thirst without breaking the fast. To a spectator who does not know this, it can look identical to the performance mouth-rinsing that other players do — the physical gesture is almost the same, but the reason is entirely different.

The thing most people do not think to ask is what players are actually drinking when they do swallow. Plain water is common, but many touchline bottles contain carbohydrate drinks, electrolyte mixes, or both. Sweat carries sodium and other minerals out of the body, and replacing water alone does not fully restore what has been lost over ninety minutes. The bottles are often colour-coded or marked so each player grabs their own — what looks like a generic water bottle is sometimes a personalised mix.