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SUNDAY, NOVEMBER 1, 2026 · ISSUE No. 217

B1 · IntermediateAdapted from ElDiario.es

Which Hydrates Better: Water, Milk, or Beer?

¿Qué bebida hidrata más: agua, leche o cerveza?

Sep 2, 20261 min readGraded Spanish · word-by-word audio

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La hidratación es muy importante para la salud. El cuerpo humano contiene aproximadamente un 60% de agua. Sin embargo, muchas personas terminan el día ligeramente deshidratadas sin saberlo, porque la sed no siempre es un indicador fiable. Además, no todos los líquidos hidratan de la misma manera. El índice de hidratación de las bebidas, conocido como BHI, mide la capacidad de un líquido para permanecer en el cuerpo. En un estudio de 2016, 72 hombres bebieron un litro de agua u otras 12 bebidas.

Por otro lado, algunas bebidas como el café, el té, los refrescos de cola y la cerveza hidratan igual que el agua. Aunque el café contiene cafeína, que tiene un efecto diurético, este efecto no es suficiente para reducir su contribución a la hidratación. Sin embargo, la cerveza no es una buena opción para hidratarse, porque el alcohol aumenta la producción de orina y el cuerpo elimina más agua de la que ingiere.

Para mejorar la hidratación en días de calor, el agua sigue siendo la mejor opción. Pero añadir una pizca de sal al agua puede aumentar la retención de líquidos. La leche es especialmente útil después del ejercicio o para personas mayores que necesitan recuperar líquidos rápidamente. En resumen, no todas las bebidas hidratan igual, y conocer el BHI nos ayuda a elegir mejor.

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Watch out, English speaker

Spanish impersonal sentences with 'se' often confuse English speakers because English has no direct equivalent. While English uses 'you,' 'one,' or passive voice, Spanish uses 'se' plus a third-person verb. For example, 'Se puede añadir sal' means 'You can add salt' or 'Salt can be added,' not 'It can add salt to itself.' Spanish 'aunque' can take either the indicative or subjunctive, unlike English 'although' which always takes a factual clause. When 'aunque' is followed by the indicative, it means 'although' a real fact, as in 'Aunque la cafeína tiene un efecto diurético...' meaning 'Although caffeine has a diuretic effect...' English speakers might mistakenly use the subjunctive for all cases, but here it signals a known fact. Spanish vocabulary like 'índice' and 'orina' can be false friends or have different connotations. 'Índice' often means 'index' or 'rate,' not just 'index finger,' and 'orina' is the formal word for urine, not a casual term. English speakers might confuse 'índice' with 'indication' or use 'urine' in informal contexts where Spanish would use 'orina' medically.

Key vocabulary

  • hidrataciónf.

    hydration

    “La hidratación es esencial para el rendimiento deportivo.”— Hydration is essential for athletes.

    Pattern la hidratación de la piel skin hydration

    Compare rehidratación (rehydration)

    Plural: hidrataciones

    💡 From Greek hydor (water); related words include hidráulico (hydraulic).

  • deshidratadoadj.

    dehydrated

    “Si no bebes agua, puedes sentirte deshidratado.”— After running, I felt dehydrated.

    Pattern estar deshidratado to be dehydrated

    Compare seco (dry)

    Feminine: deshidratada; plural: deshidratados

    💡 The prefix des- means 'negation', hidratar means 'to hydrate', so deshidratado means 'dehydrated'.

  • indicadorm.

    index, rate

    “La sed es un indicador tardío de deshidratación.”— The price index rose this year.

    Pattern un indicador de salud a health indicator

    Compare señal (signal)

    Plural: indicadores

    💡 From the verb indicar (to indicate); the suffix -dor means 'thing' or 'person'.

  • índicem.

    urine

    “El índice de hidratación mide la eficacia de las bebidas.”— The doctor analyzed his urine.

    Pattern el índice de precios price index

    Compare coeficiente (coefficient)

    Plural: índices

    💡 Note the plural form índices, changing c to z.

  • medirv.

    electrolyte

    “Los científicos midieron la orina de los participantes.”— Sports drinks contain electrolytes.

    Pattern medir la temperatura to measure temperature

    Compare calcular (to calculate)

    Present: mido, mides, mide...; Past: midió

    💡 Note the irregular e-to-i change, as in mido.

  • permanecerv.

    protein

    “El agua permanece en el cuerpo si hay electrolitos.”— Milk is rich in proteins.

    Pattern permanecer en el cuerpo to remain in the body

    Compare quedarse (to stay)

    Present: permanezco, permaneces...; Past: permaneció

    💡 Similar to conocer, add -zco in the first person.

  • orinaf.

    diuretic

    “El alcohol aumenta la producción de orina.”— Coffee has a diuretic effect.

    Pattern producción de orina urine production

    Compare pis (colloquial, urine)

    Plural: orinas

    💡 Related verb orinar (to urinate).

  • ralentizarv.

    to retain

    “Las proteínas ralentizan el vaciado del estómago.”— The body retains water when it's hot.

    Pattern ralentizar el proceso to slow down the process

    Compare retrasar (to delay)

    Present: ralentizo; Past: ralentizó

    💡 From lento (slow), with the prefix ra- for emphasis.

  • retenciónf.

    emptying

    “La sal puede aumentar la retención de agua.”— Stomach emptying is slower with proteins.

    Pattern retención de líquidos fluid retention

    Compare conservación (preservation)

    Plural: retenciones

    💡 From the verb retener (to retain).

  • diuréticoadj.

    pinch

    “La cafeína tiene un efecto diurético.”— Add a pinch of salt to the water.

    Pattern efecto diurético diuretic effect

    Feminine: diurética; plural: diuréticos

    💡 From Greek dia (through) + ouron (urine).

  • pizcaf.

    “Añade una pizca de sal al agua.”

    Pattern una pizca de sal a pinch of salt

    Compare poquito (a little bit)

    Plural: pizcas

    💡 Commonly used in cooking, as in una pizca de azúcar.

Grammar spotlight

Impersonal sentences (se + third-person verb)

A2

Use se + the third-person singular or plural form of the verb to express a general 'one' or 'you' or 'can' without specifying who performs the action. The verb agrees in number with the noun that follows.

“Se puede añadir una pizca de sal al agua.”— You can add a pinch of salt to the water.

⚠️ Don't forget to place se before the verb and make sure the verb agrees with the following noun.

Concessive clauses (aunque + indicative/subjunctive)

B1

Aunque means 'although' or 'even though' and can be followed by the indicative (for facts) or the subjunctive (for hypotheses). In this text, aunque is followed by the indicative to state a fact.

“Aunque la cafeína tiene un efecto diurético, este no es suficiente.”— Although caffeine has a diuretic effect, it is not enough.

⚠️ Use the indicative when aunque introduces a known fact; use the subjunctive for a hypothesis or something not yet happened.

Sentence patterns to steal

  • No todos los líquidos hidratan igual.

    Not all liquids hydrate equally.

    No todos + noun + verb + adverbThe noun can be replaced with 'alimentos' (foods), etc., and the verb with 'gustan' (are pleasing), etc.
  • La hidratación es muy importante para la salud.

    Hydration is very important for health.

    Ser + importante para + nounThe adjective can be replaced with 'esencial' (essential), etc., and the noun with 'el bienestar' (well-being), etc.
  • Esto se debe a que los electrolitos y las proteínas de la leche ralentizan el vaciado del estómago.

    This is because the electrolytes and proteins in milk slow stomach emptying.

    Esto se debe a que + clauseThe clause can be replaced with other reasons, such as 'el agua es esencial' (water is essential).
  • La leche es una buena opción después del ejercicio o para personas mayores que necesitan recuperar líquidos rápidamente.

    Milk is a good option after exercise or for older people who need to replenish fluids quickly.

    Ser una buena opción para + noun/infinitiveThe noun can be replaced with 'los niños' (children), etc., and the infinitive with 'viajar' (travel), etc.
  • En días de calor, el agua sigue siendo la mejor opción para la hidratación diaria.

    On hot days, water remains the best option for daily hydration.

    Seguir + gerund + nounThe gerund can be replaced with 'siendo' (being), 'estando' (being), etc.

Hydration Habits in Spain

In Spain, people traditionally drink water or wine with meals, but in recent years health awareness has increased and more people choose bottled water or low-sodium drinks. Spanish summers are hot, and outdoor workers often drink a barley water called 'agua de cebada' to stay hydrated.

Source: Spanish food culture facts

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