Trouble sleeping during Ramadan?

During Ramadan, your nights change shape. They start late, after iftar and the evening that follows, and waking up for suhoor before dawn splits them in two. The days, meanwhile, run long. If you’re dragging, you’re far from alone: on average, studies find about 50 minutes less sleep per night during the month. Several things weigh on it: a later, broken-up night, late, heavy meals, a day without anything to drink, and busy evenings with family and friends. And there’s one people tend to overlook: caffeine. Your morning coffee disappears, which often explains the headache of the first days, and then coffee and tea get packed in between iftar and suhoor, right in your sleep window. Here’s how it all fits together, and how to recover better.

This page is about sleep and caffeine, nothing else. The fast itself, how you keep it and what it means to you are yours.

Why is it so hard to sleep during Ramadan?

Normally, your night is one solid block. During Ramadan, it gets chopped up. Bedtime slides later, with iftar, sometimes a second meal, visits, TV. Then the alarm goes off before dawn for suhoor. After that, depending on your day, you go back to bed for a few hours or head straight into it. Two pieces of sleep instead of one, and fewer hours overall.

Pooling 24 studies, researchers found that total sleep dropped on average from 7.2 hours a night before Ramadan to 6.4 hours during it (Faris et al., 2020). And the schedule is the main culprit. When researchers held sleep times, light, and sleep length constant, fasting on its own didn’t make people sleepier during the day; in everyday life, though, bedtimes and wake-up times shifted noticeably later (Qasrawi et al., 2017). The schedule, luckily, is exactly where you have some room to work with.

What’s weighing on your nights?

• Late, heavy meals. Digestion still in progress makes the start of the night lighter.
• A day without drinking, then a lot of water all at once before bed, which can wake you up for a bathroom trip.
• Evenings that run late. Visits, family, shows, your phone: it’s part of what makes the month special, and it pushes bedtime back.
• Even shorter nights when Ramadan falls in summer.
• Caffeine, moved and concentrated, covered below.

If you have a health condition, take medication, or tend to get migraines, talk to your doctor before the month starts: they know your situation. And if you find yourself fighting sleep behind the wheel, pull over: the tiredness adds up day after day.

What if your caffeine has moved?

During the fast, there’s no coffee or tea during the day. All your caffeine shifts into the hours between iftar and suhoor, and that affects your sleep in two ways.

The morning coffee disappears

When you drink coffee every day, your brain adapts to it: it builds more receptors for adenosine, the molecule behind tiredness. When the usual cup doesn’t show up, a dull headache sets in, often with fatigue and irritability. It’s the same mechanism as the weekend headache, stretched over a whole day. In a survey taken on the second day of Ramadan, 41% of people who were fasting had a headache, and missing caffeine stood out as the main factor (Awada & al-Jumah, 1999).

The good news: it doesn’t last. It usually starts 12 to 24 hours after your last cup, peaks within the first two days, and clears in 2 to 9 days depending on the person and their usual intake (Juliano & Griffiths, 2004). Part of the fatigue of those first days comes from there, and it fades.

Coffee and tea end up in your sleep window

Caffeine keeps you awake by blocking adenosine. Its half-life is about 5 hours, often anywhere from 3 to 7 depending on the person, and longer on the pill, during pregnancy, or for slow metabolizers. Normally, your coffee has the whole day to clear. During Ramadan, it lands right in the few hours you have to sleep.

One example: a cup of coffee with about 80 mg of caffeine right after iftar still leaves roughly half five hours later. The same cup late in the evening, an hour before bed, is still nearly all there when you turn out the lights, and if your suhoor alarm goes off four hours after you fall asleep, about half is still around. On a night that’s already short, that leftover weighs more, and caffeine also makes the sleep you do get lighter.

Tea counts too: black tea runs about 40 to 70 mg a cup, green tea 20 to 45 mg, more when it’s strong and steeped long, and the cups add up over an evening (details in how much caffeine is in tea). A 12-oz can of Coke adds about 34 mg.

If you clear caffeine fast or don’t drink much of it, it’s probably not your main lead. But if your coffee and tea have crept later into the night, it’s worth a test.

How do you manage coffee and tea during Ramadan?

• Before: taper gradually. Over the week or two before, cut back about 25% every few days, starting with the cups you enjoy least. Showing up on day one at 150 mg instead of 400 makes a big difference to the headache. The full method: cutting back without the headache.
• After iftar: early rather than late. The coffee or strong tea that comes with breaking the fast has time to wear off before you sleep.
• Late in the evening: keep it light. Decaf, with just 2 to 5 mg a cup, a lighter tea, or a mint or chamomile herbal tea with no caffeine at all.
• At suhoor: it depends on what’s next. If you go back to sleep afterward, that coffee lands right on that sleep. If you head straight into your day, it stands in for your morning cup; the authors of the headache survey even suggested a strong coffee just before the fast begins.

How can you tell if caffeine is affecting your nights?

Run it over one week, after the first few days of the month, which are always the hardest:

1. Keep your caffeine in the early part of the evening, right after iftar, and switch everything after that to decaf, light tea, or herbal tea.
2. Change nothing else, schedule and meals included.
3. Each morning, note how long it took you to fall asleep and your energy, from 1 to 5.
4. Compare with the week before. If you fall asleep faster and get through the day better, your late caffeine was part of the story. If not, look at your schedule or your meals.

How can you recover better during the month?

• Keep sleep times roughly the same from night to night, and protect the longest block of sleep you can.
• Add a short nap if your day allows: about 20 minutes in the early afternoon. If it won’t come, see why you can’t nap even when you’re exhausted.
• Keep the last meal lighter before bed, and drink steadily between iftar and suhoor rather than all at once at bedtime.

Take back your nights

CaffIQ helps you see where you stand and take back control of your sleep, during Ramadan and the rest of the year. Based on what you drink and your profile, it estimates how much caffeine will be left when you go to sleep and gives you a personal cutoff: you know whether that late-evening tea still fits, or whether an herbal one is the better call. And if your watch saves your nights to the Health app, the Sleep Lab in CaffIQ Pro puts them side by side with your caffeine, so you can see whether the link exists for you.

The coffee or tea that comes with breaking the fast is one of the good moments of the month, so keep it. Often, all it takes is having it early in the evening and leaving the late hours to decaf.

CaffIQ provides general estimates, not medical advice. For any health question, consult a qualified professional.