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How do I stay hydrated while fasting?

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Photo: Achim Hering, Public domain via Wikimedia Commons

Drink water steadily from iftar to suhoor, eat water-rich food, and cut down on salt, caffeine and sugary drinks. You can't drink during the day, so the goal is to fill up gently and evenly at night and to lose as little water as possible while you fast.

Spread your water through the night

Your body can only absorb so much at once. Drinking a litre in five minutes at iftar mostly sends you to the bathroom. A steadier plan works better:

  • 1 to 2 glasses at iftar (the Prophet ﷺ would break his fast with dates or sips of water, Sunan Abi Dawud 2356)
  • 2 glasses between Maghrib and Isha
  • 1 to 2 glasses after Tarawih or before bed
  • 2 glasses at suhoor

That adds up to around 2 litres, more in hot weather or if you work outdoors. Sip rather than gulp. See What is iftar and how do I break my fast?

Eat your water too

Food can carry a lot of water. Good choices for suhoor and iftar include:

  • cucumber, watermelon, tomatoes, oranges and berries
  • soups, lentil stews and broths
  • yoghurt, laban and overnight oats soaked in milk

Water is a blessing Allah placed at the root of life itself:

وَجَعَلْنَا مِنَ ٱلْمَآءِ كُلَّ شَىْءٍ حَىٍّ "...And We made from water every living thing." Quran 21:30

Avoid what dries you out

  • Salty food: crisps, pickles, processed meat and salty cheese make you thirsty all day.
  • Caffeine: coffee, strong tea and cola are mild diuretics. Keep them small and early.
  • Sugary drinks: they taste refreshing but don't hydrate as well as water.
  • Heat and hard exercise: stay in the shade and move workouts to after iftar. See Can I exercise while fasting in Ramadan?

Cooling down during the day

A cool shower or rinsing your face and arms in wudu helps you feel fresher without breaking the fast. See Does showering break my fast? Watch for signs of real dehydration: dizziness, confusion, a racing heart, fainting or very dark urine. If they appear, drink and break the fast. Islam doesn't ask you to harm yourself, and you can make up the day later.

Key points
  • Aim for about 2 litres spread from iftar to suhoor.
  • Eat water-rich fruit, vegetables, soups and yoghurt.
  • Cut salt, caffeine and sugary drinks.
  • Severe dehydration signs: break the fast and drink.
Tip: Keep a full water bottle by your bed and another on the suhoor table. When it's right in front of you, you'll drink far more without thinking about it.

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