what can i drink while fasting?
Ever find yourself asking, “What exactly can I drink while fasting?”
Or wondering if black coffee is a yes or no?
How about sparkling water? And what the heck is proffee?
Let’s break it all down, without the science mumbo jumbo—just real talk, backed by research, and written by someone who gets it.
Whether you're into intermittent fasting, trying to reset your gut, or just giving your body a breather, here's what to sip on (and what to avoid).
Plus, we’ll show you how 100 Cal Snacks fits in perfectly when it’s time to break that fast. Let’s go!
How To Choose The Right Drink For Your Fast?
Simple rule? Low-to-zero calories.
But let’s not stop there.
The right way to choose a fasting drink depends on your goals (weight reduction, metabolic health, or religious/medical fasting), Here’s what to look for:
- Stick to Low Calories: During most fasting periods, only beverages with few to no calories are permitted. Water is considered the best, but unsweetened black coffee and tea are also frequently consumed and suggested.
- No Sweeteners and Creamers: Even zero-calorie sweeteners, milk, and cream can cause an insulin reaction and interrupt your fast.
- Hydration is Crucial: Water (simple or carbonated) is the best way to stay hydrated and lessen hunger cravings. You may add a squeeze of lemon or a few cucumber slices for taste.
- Choose Electrolytes for Longer Fasts: If you're fasting for a long time, electrolyte drinks or coconut water can assist maintain mineral balance; making sure you are not dehydrated.
PRO TIP: If you're doing a 16:8 or 20:4 fast and planning to snack after, keep your post-fast clean and powerful, like Chocolate Protein Bars or BBQ Protein Puffs from 100 Cal Snacks. Gut-friendly, guilt-free.
Why Is Hydration So Important When Fasting?
When you engage in fasting, your body enters a phase of cellular maintenance known as autophagy, during which the body recycles damaged cells.
In plain terms, it’s a good process that naturally cleanses, repairs and immunes your body.
However, dehydration can disrupt this natural cleaning process.
Thus, the only way to reap the full benefits of fasting is to ensure that your body remains properly hydrated during the entire process.
So drink up:
- 2–3 liters of water daily
- For longer fasts, add ¼ tsp of salt per liter to balance electrolytes
- Include high-water foods post-fast, like cucumbers, berries, and yes, our low-bloat protein snacks made with real ingredients.
So... What Drinks Are Actually Okay While Fasting?
Glad you asked. Here’s your go-to list:
1. Water (Still or Sparkling)
The OG. Essential.
Supports nutrient flow, clears toxins, and curbs cravings.
Add lemon or cucumber if you’re fancy.
Bonus: Sparkling water activates stretch receptors in your belly, tricking your brain into feeling fuller.
2. Black Coffee
If you are the coffee lover who cannot pull through a day without 2-5 cups, it’s fine, says Dr. Devries.
Caffeine boosts your metabolism and helps burn fat stores for energy.
If you’re looking for something that’s easier on your stomach, you can go for cold brew. It has a lower acidity, making it gentler to drink on an empty stomach.
After your fast, pair your cup with 100 Cal Snacks Protein Puffs- they’re light, crisp, and protein-packed.
3. Green Tea
Not just trendy, green tea can reduce oxidative stress and body fat.
Plus, it gently wakes you up without a crash.
For optimal benefits, drink it before breakfast or in the morning.
If you like experiments, try blending grade matcha with ice for a calorie-free “espresso” shot. A must try for intermittent fasters!
4. Herbal Tea
From peppermint to ginger to chamomile, there's herbal tea for every mood.
All the goodness, none of the calories!
5. Bone Broth (for Extended Fasts)
Fasting drinks often come with some amount of sugar intake, but that’s not the case with bone broth.
Full of gut-healing nutrients like collagen and minerals.
It is also beneficial for:
- Weight management
- Improving sleep
- Boosting Immune Function
- Hair, skin and nail health
- Joint health, inflammation reduction and more.
- Best for fasts longer than 20 hours or cold winter nights.
6. Apple Cider Vinegar Water
One tbsp in water can stabilize blood sugar—but drink it with a straw to protect your teeth!
What’s Trending in Fasting Drinks in 2025?
Sparkling Tea
Move over, kombucha. In 2024, non-alcoholic sparkling teas were found to be one of the best “wine alternatives.”
Chic, refreshing, and energizing, all at once!
Electrolyte Mixes
Brands now offer fasting-specific mixes with magnesium, potassium, and sodium ratios optimized for autophagy.
AI Hydration Assistants
Apps now track your sweat and tell you when to drink!
And speaking of trends- 100 Cal Snacks is right there with adaptogen-rich, mood-supporting, gut-friendly snack bars to break your fast right.
Are There Any Fasting Drinks I Should Avoid?
Knowing what not to do is sometimes more important than knowing what to do.
Watch out for these:
- Milk/ Cream: Even a tablespoon can trigger insulin.
- Diet Soda: Artificial sweeteners = insulin spikes = fast broken.
- Alcohol: Messes with fat metabolism and dehydrates you.
Wait… Should I Fast Every Day?
Not necessarily.
Here’s a quick breakdown of fasting styles:
- 16:8 – Eat within 8 hours, fast for 16. Most popular.
- 20:4 – Hardcore. Eat for 4 hours.
- 24-Hour (Eat-Stop-Eat) – 1–2 times a week.
- Alternate Day – Fast one day, eat the next.
- Periodic Fasting – Multi-day fasts once a month.
If you’re new, start with 12-hour fasts and go slow.
Let your body learn how to burn fat instead of sugar.
What Should I Eat When I Break My Fast?
THIS is the real question.
After fasting, your digestive system is sensitive. You want something:
- High in clean protein
- Low in sugar
- Easy on the gut
100 Cal Snacks has it all. Our high-protein BBQ protein puffs, low-calorie fudgy chocolate protein bars, and high-fiber Indian gooseberry-infused peanut butter bars are definitely hard to resist.
They’re super gut-friendly and fill you without any heaviness or bloating, while being delicious enough to crave after long hours of fasting.
Don’t take our word for it, give them a try yourself! 100 Cal Snacks: Solution for before and after hunger!
