🌙 Guide · Training while fasting

When to Work Out During Ramadan: Before or After Iftar? (and How to Track It in Suu)

Published: · Furkan Mert Fındıklı · 7 min read

Short answer: If you're fasting, do light to moderate sessions — walking, easy running, mobility — in the hour before iftar, keep them under 60–75 minutes including the warm-up, and finish close to sunset so you can drink and eat straight away. Save weights and high-intensity work for 1–3 hours after iftar. Suu records the workout with GPS and tracks what you drink between iftar and suhoor.

We wrote this guide as the two-person team that builds Suu. We recommend our app, but the advice rests on the Aspetar Ramadan guideline, the NHS and peer-reviewed studies — you can follow the same steps without Suu.

The real question about exercise in Ramadan isn't whether but when and how much. For most sedentary people the fast barely changes nutrition or body weight; the people it affects are the ones who train. As the day goes on, muscle glycogen and body fluid fall and sleep gets shorter, which can blunt endurance, strength and short bursts of power.1

So the answer isn't to stop training for a month — it's to move the session and adjust the dose. That is exactly what the Ramadan guideline for healthy adults from Aspetar, the sports medicine hospital in Qatar, recommends: the harder the session, the closer to iftar, or after it.2,3

Which session, at which hour?

The rule is simple: the harder the workout, the closer you should be to water and food.2

  • Just before iftar (the last 30–75 minutes): walking, easy running, easy cycling, stretching and mobility. Finish close to sunset so your first drink and meal start replacing losses straight away. Keep it to 60–75 minutes including the warm-up.
  • 1–3 hours after iftar: weights, intervals, five-a-side and tempo runs. After a heavy iftar wait 2–3 hours; after a light start about an hour is enough. You can drink during the session, which makes this the most comfortable window for hard work.
  • After taraweeh, at night: a variation of post-iftar training. The only condition is that it doesn't eat into your sleep — if it pushes bedtime back, keep it short.
  • After suhoor: possible but tough. A long fasting day lies ahead and you can't replace what you sweat out until sunset; keep this slot for short, light movement.
  • In the midday heat: avoid it. Sweating while fasting and hot means losses you can't make up for hours.

Shephard's review found that for most sedentary people the fast hardly changes body weight or total energy intake; performance losses show up mainly in athletes training through hot months with long days.1 Ramadan moves about 11 days earlier each year, so fasting hours and heat change from year to year — in summer Ramadans, cut the load more.

Lighten the first week, then build back

Your body needs a few days to adapt to the new meal and sleep pattern. The Aspetar guide suggests cutting weekly volume (sets and total minutes) in the first week, taking longer rests between sets if needed, and noting how hard each session feels.2

For example, if you ran 45 minutes four times a week before Ramadan, start the first week with three 30-minute runs; if that feels easy, go back to your usual plan from week two. The goal this month isn't a personal best — it's keeping the fitness you've built.

Stopping altogether isn't the answer either: the NHS recommends adults get at least 150 minutes of moderate activity a week, and that still applies in Ramadan.5 Even a relaxed 20–30-minute walk after iftar counts.

Water between iftar and suhoor: little and often

You can only replace the day's fluid losses between iftar and suhoor. Aspetar's practical guide suggests at least 3–4 litres in that window for active adults, roughly 200 ml every 30 minutes from iftar until bedtime, and notes that large, rapid 'water loading' at suhoor is poorly tolerated by many people.2

  • Break the fast with water and 1–3 dates or a bowl of soup, pause briefly, then have your main meal.
  • Spread your water across the evening; a reminder on your phone does the remembering for you.
  • After a sweaty session add water-rich foods — soup, watermelon, cucumber, yoghurt drinks — and consider an electrolyte drink if you sweated heavily.
  • Limit tea and coffee, especially close to bedtime; they break up your sleep.
  • Very salty or fried food at suhoor can make you thirstier during the day.

The easiest check is urine colour: pale straw is a good sign; if it's dark yellow, drink more after iftar.2

Suhoor, iftar and sleep: the invisible half of training

If you train during the day, don't skip suhoor: fibre-rich carbohydrates (oats, wholegrain bread), protein (eggs, cheese, yoghurt) and water-rich foods help the day run more evenly. Eat suhoor as close to dawn as practical.2

Sleep is what shrinks most in Ramadan.1 The guide recommends split sleep: protect your core night sleep and add a 20–45-minute nap in the early afternoon. On training days spread protein across iftar, after training and suhoor; after an evening session, milk or yoghurt before bed is a good option.2

If you have diabetes, adapt this section with your doctor: the IDF-DAR guidelines for people with diabetes who fast recommend planning exercise, medication and meal times individually.4

Where to track this in Suu

Menu names are exactly as they appear in the app:

  1. Time your reminders to iftar and suhoor

    iPhone: Settings → Notification Settings → Smart Notifications
    Android: Settings → Smart Notifications

    Move 🌅 Morning Reminders to your suhoor time and 🌆 Evening Reminders to iftar. Under Interval reminders, set Start to iftar and End to your bedtime (every 2 hours at most; the window has to end before midnight). That way Suu sends your water reminders around iftar and suhoor.

  2. Record your pre-iftar walk or run with GPS

    Home → quick add → Add Exercise → Walking or Running → start

    Time, distance, pace and route are recorded live; calories burned and the workout's effect on your water goal are calculated automatically. Start it from Apple Watch and you'll also see your heart rate live — the easiest way to keep the pace low while fasting.

  3. Log your iftar in one sentence

    Home → quick add → Add Food → microphone or text field

    “Two glasses of water, a bowl of lentil soup, three dates and a glass of ayran” is enough; calories and macros are calculated and the water and drinks count towards your fluid balance. 3 AI analyses a day on the free plan.

  4. Suu Index

    iPhone: You tab → Water → Suu Index
    Android: Statistics → Suu Index

    Scores your daily hydration from 0 to 100, so you can see — rather than guess — whether what you drank between iftar and suhoor was enough.

GPS workouts are free; text and voice meal analysis is 3 times a day on the free plan. You set the reminder times yourself each Ramadan to match your local iftar and suhoor.

In short

You can train in Ramadan — what matters is the hour and the dose. Put light sessions just before iftar, weights and hard sessions 1–3 hours after it, and lighten the first week.

The real work happens between iftar and suhoor: spread your water, don't skip suhoor, protect your sleep. You'll come out of Eid with your fitness intact instead of starting from zero.

Record your pre-iftar walk today

GPS workouts are free · iOS and Android

Frequently asked questions

Is it OK to work out while fasting in Ramadan?

For healthy adults, yes — timing and intensity are what matter. Do light to moderate sessions just before iftar and weights or high-intensity work after iftar. If you have a long-term condition, check with your doctor first.

Should I work out before or after iftar?

Both work; it depends on the session. Light training such as walking, easy running and stretching goes just before iftar, under 60–75 minutes including the warm-up. Hard training such as weights, intervals and matches goes 1–3 hours after iftar.

How long after iftar should I wait before training?

It depends on the size of the meal: 2–3 hours after a heavy iftar, about an hour if you started light. Training after taraweeh is fine too, as long as it doesn't push your bedtime back too far.

Can I lift weights while fasting?

Yes, but the best time is after iftar, when you can drink during the session and have protein afterwards. In the first week do fewer sets and take longer rests between them.

Is it good to exercise after suhoor?

It's possible but tough: a long fasting day lies ahead and you can't replace what you sweat out until sunset. Keep this slot for short, light movement.

Will I lose weight if I exercise during Ramadan?

The fast itself barely changes weight for most people; if you want to lose weight, portion sizes and desserts at iftar decide it. Staying active mainly helps you keep your fitness through the month.

References

  1. Shephard RJ — The impact of Ramadan observance upon athletic performance. Nutrients, 2012
  2. Aspetar — Evidence-Informed Ramadan Nutrition, Hydration, Sleep and Training Strategies for Physically Active Adults: A Practical Guide (Tabben M; expert review: Chamari K, Aziz AR, Ben Saad H)
  3. Chamari K et al. — Aspetar clinical guidelines: Ramadan fasting and exercise for healthy individuals. Tunis Med, 2023
  4. Hassanein M et al. — Diabetes and Ramadan: Practical guidelines 2021 (IDF-DAR). Diabetes Res Clin Pract, 2022
  5. NHS — Physical activity guidelines for adults aged 19 to 64

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Suu is not intended for medical diagnosis or treatment. Consult a healthcare professional for health-related decisions.

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