How to Successfully Fast for 90 Days: Tips, Insights, and Examples

Fasting has been used for centuries as a way to achieve spiritual, physical, and mental clarity. While the practice of fasting has gained more popularity in recent years, fasting for longer periods, such as 90 days, can still be seen as a daunting and challenging task. However, with the right preparation, mindset, and resources, anyone can successfully fast for 90 days. In this post, we’ll cover everything you need to know to successfully complete a 90-day fast.

What is Fasting?

Fasting is the voluntary act of abstaining from food and sometimes even liquids for a period of time. Fasting has been adopted in different cultures and religions as a way of achieving a spiritual connection with a higher power, cleansing the body of toxins, and promoting physical health benefits such as weight loss and improved mental clarity.

How Long Can You Realistically Fast For?

The length of a fast can vary depending on personal goals, physical strength, and reasons for fasting. The 90-day fast is one of the longest fasting periods a person can do, and it requires adequate preparation and discipline to complete successfully. Before committing to a fast of this length, it’s essential to consult with a healthcare provider to ensure that your body is prepared for such a task.

What is the Longest You Can Water Fast For?

Water fasting is a type of fasting where you only drink water and abstain from consuming food. The duration of a water fast can vary from person to person, but the maximum time for a water fast is typically around 40 days. After 40 days of water fasting, it’s essential to gradually reintroduce food back into the diet to avoid refeeding syndrome, which can be a life-threatening condition.

100 Day Fast Reddit: Is it Safe?

While we’ve covered that the maximum duration of a safe water fast is around 40 days, there are still individuals who have attempted and completed more extended water fasts. The r/fasting community on Reddit is a place where people share their experiences and support each other through their fasting journeys. There are a few posts on Reddit discussing 100-day fasts. However, it’s important to note that it should not be attempted without proper medical guidance and supervision.

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Tips for Preparing for a 90-Day Fast

Preparing for a 90-day fast requires a lot of discipline and planning. Here are some tips to help you prepare for your 90-day fast:

Consult a Healthcare Provider

Before beginning any fasting regimen, it’s essential to consult with a healthcare provider to determine if it’s safe for you. Your healthcare provider can help you decide which type of fast is best for you and ensure that you’re not putting your health at risk.

Start Slowly

If you’re new to fasting, it’s a good idea to start with intermittent fasting or shorter water fasts, such as one- or two-day water fasts. Gradually increasing the duration of your fasts can help you build up to a 90-day fast gradually.

Build a Support System

Going through a long fast can be challenging, so having a support system can be crucial. Consider setting up a support group or enlisting the help of a fasting buddy to keep you accountable and motivated throughout your 90-day fast.

Choose the Right Time

Choosing the right time to begin a 90-day fast is crucial. It’s best to choose a time in your life where you can manage your stress levels and won’t have too many distractions. Starting your fast during a busy or stressful time can make it more challenging to stick to your fast.

Set Realistic Expectations

Fasting for 90 days is a considerable undertaking, and it’s essential to set realistic expectations. It’s best to go into a 90-day fast with an open mind and be aware that it may not always be a comfortable experience.

What to Expect During a 90-Day Fast

The first few days of a 90-day fast can be incredibly challenging as your body adjusts to the lack of food and begins to burn stored fats as fuel. During the first week, you may experience symptoms such as headaches, fatigue, and mood swings as your body adjusts to the new regime. After the first week, your body may begin to experience some positive changes, such as increased clarity and focus, improved digestion, and better sleep.

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What to Do While Fasting

Fasting for 90 days isn’t only about abstaining from food. It’s also about focusing on mindfulness and self-reflection. Here are some ideas on what to do while fasting:


Meditation can help you stay focused and calm during your fast. Consider meditating for at least 20 minutes daily to help keep you grounded and focused on your goals.


While you may not have the same high-intensity workouts as you would during normal eating periods, gentle exercises such as light yoga or walking can help you maintain your muscle mass and keep your energy levels up.

Stay Hydrated

It’s essential to drink enough water during your fast to keep your body hydrated. Drinking water can help you avoid symptoms of dehydration, such as headaches and dizziness.


Rest is essential during a fast. Make sure to get enough sleep and take breaks throughout the day to give your body time to rest and regenerate.

90-Day Fasting and Prayer

Fasting and prayer have been intertwined throughout history, and many people still choose to combine fasting and prayer as a way to achieve spiritual clarity and make meaningful changes in their lives. For those who choose to incorporate prayer into their 90-day fast, consider setting aside time for prayer or meditation every day to focus your mind and reflect on your spiritual journey.

60-Day Water Fasting Before and After

Fasting for extended periods can have transformative effects on the body both physically and mentally. While everyone’s experience may differ, many people who have completed a 60-day water fast report a significant decrease in weight, improved mental clarity, and a deeper sense of spiritual connection. However, it’s important to note that the results of a fast can vary depending on each individual’s unique circumstances.

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Can You Fast for 3 Months?

Fasting for three months is a considerable undertaking and requires extensive preparation and support. While longer fasts, such as a 90-day fast, are possible, it’s important to consult with a healthcare provider before attempting such a challenge to ensure that it’s safe for your body and mind.

100 Day Water Fast Before and After

While some individuals have completed 100-day water fasts, it’s important to note that these can be extremely challenging and should not be attempted without proper medical guidance and supervision. As with any fast, the results can vary. It’s important to approach fasting with an open mind and be aware that individual experiences may differ.


Fasting for 90 days can be a life-changing experience that offers spiritual and physical benefits. However, it’s essential to take the necessary precautions when attempting such a long fast. By preparing yourself adequately, building a strong support system, and focusing on mindfulness and self-reflection during your fast, you can successfully complete a 90-day fast. If you’re planning on fasting for 90 days, make sure to consult with a healthcare provider and take things slow, starting with shorter fasts to build up your strength and discipline.