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What To Drink While Intermittent Fasting

Intermittent fasting holds the potential for a myriad of health benefits, all without counting calories or hours of preparation. (1) No wonder so many people have been trying (and raving about) it!  

Despite what it might sound like, intermittent fasting is NOT about starving yourself. So what exactly can you consume while following an intermittent fasting plan? And are there drinks that can make it easier or more effective? We wanted to get to the bottom of that question, and here’s what we discovered.

Feeding vs. Fasting

Intermittent fasting breaks your day into two parts:  

  1. Eating (feeding), and
  2. Not eating (fasting)

There are entirely different guidelines for what you can eat and drink, depending on whether you’re in your eating window or fasting window. Before we get into those, let’s refresh ourselves on how the schedule works.

There are actually a variety of intermittent fasting schedules you can follow. We have a handy guide to fasting schedules for you to check out here. The most common is the 16/8 plan, which means you eat for an 8-hour window and fast for 16 hours. You can also choose to do shorter or longer eating windows, or maybe opt for alternate-day fasting. 

 If you’re new to this way of eating and need help getting started, definitely check out our Beginner’s Guide to Intermittent Fasting.

Can I Eat Or Drink During My Fasting Window?

During your fasting period, you need to refrain from consuming any food or beverages that contain calories. So….. no food. But you have several beverage options, and these are important because it is critical to keep yourself hydrated while fasting.

Plus, there are certain drinks which can even help enhance the benefits of your intermittent fasting plan. Sweet!

1. Water

Water is always a great choice, all day long, every day. It can be still or sparkling, whatever you enjoy. You can also add a squeeze of lemon or lime to your water, or infuse a pitcher of water with cucumber or orange slices.

But make sure you stay away from any artificially-sweetened water enhancers (like Crystal Light). The artificial sweetener can interfere with your fast!

2. Coffee

Technically, black coffee is a calorie-free beverage, and many people drink it during fasting with no adverse effects. There are some people who experience a racing heart or upset stomach if they use coffee during a fast, so monitor your own experience. You can drink caffeinated or decaffeinated coffee, but any sweetener or milk is prohibited. Spices like cinnamon are totally fine!

Bonus: black coffee might actually enhance some of the benefits of intermittent fasting. This study demonstrated that taking in caffeine can support ketone production. Coffee has also been shown to support healthy blood sugar levels over the long term.

3. Broths

A bone or vegetable broth is recommended for any time you decide to fast for 24 hours or more. Beware of canned broths or bouillon cubes, as these have tons of artificial flavors and preservatives that will counteract the effects of your fast. A good homemade broth, or one made by a trusted source, is the way to go.

4. Tea

Tea just might be the secret weapon that not only makes your fasting plan easier but also more successful. Help increase your satiety naturally! Read our primer on how to use tea to enhance your intermittent fasting plan.

All types of tea are great to drink during a fast, including green, black, oolong and herbal tea. But green tea, in particular, has been proven to help increase satiety and support healthy weight management. (2) And tea, in general, boosts the effectiveness of intermittent fasting by supporting gut health, probiotic balance, and cellular health.

5. Apple Cider Vinegar

Drinking apple cider vinegar has numerous health benefits, and you can definitely continue drinking it while intermittent fasting. And since apple cider vinegar helps to support healthy blood sugar and digestion, it may enhance the effects of your intermittent fasting plan.

6. Drinks to Avoid

There are a few beverages (including “zero-calorie” ones) that you might not realize are capable of breaking your fast. This just means that if you consume these, you will knock your body out of the “fasted state”.

They are diet soda, coconut water, almond milk, and alcohol!

Even though diet soda is technically free of calories, the artificial sweetener it contains can inhibit the positive effects of fasting. Same goes for alcohol. And coconut water and almond milk both tend to be very high in sugar. Sugar equals carbs, so as soon as you consume these, you are no longer considered to be fasting.  

Common Concerns

Sometimes the transition to fasting can lead to a couple weeks of symptoms like headaches, hunger and muscle cramps. These are pretty normal for your initial adjustment period. We have a few suggestions to help you out in the infographic below.

What To Drink While Intermittent Fasting Infographic

Final Thoughts

So many diets fail because they’re too complicated or difficult to follow. The popularity and success of intermittent fasting are attributable to the fact that it is incredibly simple to follow. With these basic guidelines of what you can eat and drink to support your fasting schedule, you should be well on your way to reaping the amazing benefits of fasting. Good luck!

What To Drink While Intermittent Fasting

What to Drink and Eat While Intermittent Fasting | THE FLOW by PIQUE
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What to Drink and Eat While Intermittent Fasting | THE FLOW by PIQUE
Intermittent fasting is on the rise. But there is still some confusion on what you can drink while intermittent fasting. Here we explain everything you need to know to safely create your intermittent fasting plan.
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Jessica Ederer, JD, CPT, FNS, RYT
Pique's Head of Content & Wellness Education, is a Certified Personal Trainer, Fitness Nutrition Specialist, RYT, and holds a JD from UC Berkeley. After 10 years as a practicing trial lawyer, she shifted gears and has spent the past 8 years as a health coach, educator and writer. It's her passion to help people learn sustainable, effective ways to unlock their full wellness potential. When she's not teaching or writing, you can find her hiking, mountain biking, cycling, backcountry skiing, camping and drinking anywhere from 5-7 cups of tea per day.