Are 12 hours enough for intermittent fasting

Are 12 Hours Enough for Intermittent Fasting?

Written by Andrew Brewer. ⚕️Reviewed and fact checked by our medical team.

Are 12 hours enough for intermittent fasting

Intermittent fasting helps you control what you’re eating and when you’re eating, maximizing the fat-burning results. On a 12:12 fast, you eat for 12 hours and fast for 12 hours. This is a great entry point for those just starting, as you can fast most of the time when you’re sleeping. That way, you’re not tempted to give in, and come morning, you’ll be able to eat breakfast and get started with your day!

But is it enough to help you reap the long-term benefits of intermittent fasting? Yes! You will still see results when doing a 12:12 fast, though you may want to level up to maximize your benefits. It depends on you, your lifestyle, and your comfort level, but let’s explore some of the impacts 12:12 fasting can have on your life.

Key Takeaways

  • 12:12 fasting can provide several health benefits: Despite being a relatively short fasting window, a 12:12 fasting can still help improve blood sugar levels, promote gut health, kickstart weight loss, and improve mental clarity.
  • 12:12 fasting can be a good starting point for intermittent fasting: If you’re new to intermittent fasting, starting with a 12:12 fast can be an easier way to get started. Since most of the fasting window occurs while you’re sleeping, it can be more manageable to stick to.
  • Caloric intake still matters during eating windows: While a 12:12 fast allows you to eat what you want during your eating window, it’s still important to be mindful of your caloric intake, especially if weight loss is your goal. Eating too many calories can prevent your body from tapping into its fat stores for sustained energy.

Improve Blood Sugar

As you fast for 12 hours, it may help your body improve its blood sugar levels, even in those with Type 1 and Type 2 diabetes. It is important to note that if you have diabetes, you should not attempt intermittent fasting without the supervision of a medical professional. You must monitor your glucose levels because too low or too high levels could lead to serious health issues.

Help Promote Gut Health

Fasting for 12 hours can improve your gut health by reducing your body’s exposure to endotoxin, contributing to inflammation, obesity, and metabolic syndrome. Endotoxin kills the good bacteria in your gut. When you fast for shorter periods, endotoxin has less time to grow and damage your system.

Kickstart Weight Loss

Intermittent fasting is a great tool for weight loss, and fasting for 12 hours can help you jump-start your weight loss journey. Remember, what you eat during your eating windows impacts how many calories your body must burn before it can reach its fat stores. You’ll likely see slower progress when you’re doing the 12:12 intermittent fasting program because it will take longer for your body to enter ketosis and trigger autophagy, which is when your body cleanses itself of harmful or unnecessary components.

Improve Mental Clarity

Intermittent fasting, even for 12 hours, can help you approach each day with a clear mind, centered on your body’s well-being instead of where your next meal is coming from. Start each morning with a cup of coffee or tea – free from milk and sugar. The caffeine will help your brain wake up and focus on the tasks at hand.

Why Choose 12:12 Fasting?

Other fasts will get you results quicker, but a 12:12 fast is a great starting point on your intermittent fasting journey. It’s easier to adhere to because it fits in busy schedules. Most of your fasting window is done while you’re sleeping – especially if you get eight hours of sleep – so you don’t have to worry about going without.

During the day, you can eat what you want, when you want it, though, for best results, you should still monitor your caloric intake.

This is especially important if you’re doing the 12:12 fast to lose weight. If you eat too many calories, your body won’t have the time to burn through them. Because of that, you won’t tap into your fat stores for sustained energy. The trick is to eat fewer calories than you burn to maximize weight loss results.

Break your fast with healthy, fiber, and protein-rich foods. These will be easy for your stomach to process while giving your body the nutrients it needs to continue. Overall, you can see results on the 12:12 fast. You’ll just need to be more patient and structured on your intermittent fasting journey.

Don’t forget to check our 10 best intermittent fasting apps to make your intermittent fasting journey easier.


  • How long do you have to fast to be considered intermittent fasting?

Intermittent fasting typically lasts 16-24 hours, with 12 hours being the minimum.

  • Are 12 hours enough for intermittent fasting?

While 12 hours of fasting is considered the minimum for intermittent fasting, it may not provide the same health benefits as longer fasting periods.

  • What are the benefits of intermittent fasting?

Intermittent fasting has been associated with various health benefits, including weight loss, improved insulin sensitivity, and reduced inflammation.

  • Is intermittent fasting safe for everyone?

Intermittent fasting may not be suitable for everyone, particularly those with certain medical conditions or who are pregnant or breastfeeding. Therefore, talking to a healthcare provider before starting any new diet or fasting regimen is important.

  • What can you consume during the fasting period?

Water, coffee, and tea are typically allowed during fasting, but other beverages and foods should be avoided.

  • How often should you practice intermittent fasting?

The frequency of intermittent fasting can vary depending on individual goals and preferences. For example, some people fast for several consecutive days, while others fast for shorter periods a few times per week.

  • What are some tips for getting started with intermittent fasting?

It’s important to start slowly and gradually increase the length of the fasting period. It’s also helpful to plan meals ahead of time and to stay hydrated during the fasting period.

Andrew Brewer

Andrew Brewer

Andrew Brewer started to give people the guidance that he never received when he was first starting. His goal is to make your goals achievable and to offer you only the best fasting apps that the internet has to offer. You're not on your own - Andrew and the entire family of reviewers at are here with you every step of the way!