48 hour fast

48 Hours with No Food: The Story of My 48 Hour Fast

Exercise and Health, Personal Development and Lifestyle 22 Comments


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Performing a 48 hour fast can be a scary thought, but with the right tips and plan, you can successfully make it through your fast. With this article, you will learn how you can make it to 48 hours without breaking your fast, and learn about the benefits of fasting.

complete a 48 hour fast

Over the past 4-5 years, one of my constant experiments has been with my diet and eating habits. I’ve tried fasting, but never had done long fasts before.

Back in college, I was lifting 5+ times a week and doing other exercises to get in great shape. At the same time, I was trying to hit certain nutrient and calorie levels to sustain my growth, and started down the rabbit hole of “exercise science” (the same thing as bro-science?).

At some point along this path, I came across intermittent fasting and was intrigued. Not eating for more than 12 hours?? Would I die? I can’t skip breakfast! Who are these mad people who don’t eat!

Getting outside of my comfort zone has shown to bring growth, and I decided I would skip breakfast the next day. A few months later, I did a 24 hour fast and after a while, fell into a eating pattern where I don’t eat breakfast anymore.

Fast forward to last month, and I challenged myself with a 48 hour fast.

I successfully completed this 48 hour fast, and in this post, I’ll be sharing with you my experience, as well as talk in general about intermittent fasting and my eating habits over the last few years.

First, a disclaimer: I’m not a doctor. Everyone’s body responds to things differently and just because I’ve had a good experience doesn’t mean you will. Please consult a real doctor if you have concerns or interest about this subject.

What is Intermittent Fasting and What is Fasting?

Let’s start with what is intermittent fasting?

Intermittent fasting is all about restricting the amount of time you spend in an eating state, and increasing the amount of time you spend in a fasted state.

All of us fast while we sleep, but if we extend that fast out a few more hours, that’s where some magic starts to happen.

By fasting, you are able to cleanse your body and cells. This cleansing process is what makes fasting so great.

“But I could never skip breakfast!!! I wake up sooo hungry!”

As I mentioned in the introduction, I don’t eat breakfast anymore and now will have my first food around 11 AM.

Intermittent fasting is actually not that hard to do. While it’s a challenge at the beginning due to the mental barrier of not eating, you get used to it and there are benefits to this as well.

One other thing is while fasting, you are allowed to drink water, tea and coffee – these are 0 calorie drinks which are very helpful in keeping you “full” and your mind off of food.

Why is fasting good for you and what are the benefits of fasting?

Here’s a slightly snarky, but legit question for you to ponder: what kind of eating habits did our hunter-gather ancestors have? Were they able to go down to the local grocery store and pick up whatever they wanted?

Humans have been fasting for many years – for a variety of reasons – and don’t need 3 meals a day. I don’t know if it’s some marketing ploy or what, but our bodies naturally can handle large periods of non-eating without loss of strength or energy.

What happens to our bodies in a 48 hour fast?

When our bodies go into a fasted state, a number of things happen. Our bodies are very good at cleaning themselves out, but when you keep putting crap in, then the there’s no time for our bodies to get the crap out!

By restricting the time we are eating, our bodies are able to focus in on cleaning out our cells which will lead to detoxification.

If you aren’t eating for 16 hours, then for that 16 hours, you body is going to work making sure you are cleansed. Ratchet that time up to 24, 48 or more, and you (theoretically) should be removed of many of the toxins you’ve accumulated.

A number of other great things happen as well though are outside the topic of this post (Read more about these health benefits here).

Why I Decided to Fast and My Eating Habits Over The Years

As I mentioned in the introduction, I’ve been challenging my own eating habits the last few years.

In the spring of 2015, I started experimenting with intermittent fasting.

Growing up as a child, my parents always told me I needed to eat breakfast. I was influenced as well by the marketing of always having to eat cereal or other carb-loaded and sugary things in the morning, or else I would DIE of hunger and not grow up to a strong adult.

Throughout college, I had the full meal plan and continued to always eat breakfast until 2015. I challenged myself at some point that I would skip breakfast and not eat until lunch.

It was certainly tough that first morning. 9 AM rolled around and all I could think about was food. I was drinking green tea and a lot of water, but I was still “hungry”. Later in the morning, I had a meeting and focused in on some work. All of a sudden, it was noon and time for lunch. I made it! I was still alive!

At this point, I thought this was pretty cool and started to do it every morning.

After a short while, I wanted to keep testing. What about a 24 hour fast? Could I do it?

I ended up doing a few 20+ hour fasts and realized that hunger is largely psychological. It’s 11:32 AM as I write this now and I haven’t ate yet today. I’ve had 4 big glasses of water, but am not hungry.

I don’t eat breakfast anymore, but my health and diet habits have become a little bit less of a focus recently.

This brings us to August and my 48 hour fast. I needed a change and wanted to push myself to the next level.

The Big Challenge: a 48 Hour Fast

I was feeling a little bit chubby and tired in the middle of August. Even with my usual 14-16 hours of fasting, I wasn’t getting the exercise required to stay in shape.

To shock my system, so to say, I decided I would do a 48 hour fast.

“48 hours without eating, Erik?? What are you thinking?”

Part of life is about pushing your boundaries and getting outside your comfort zone.

At 5:22 PM on a Sunday night in August, I finished up my dinner and started my 48 hour fast.

After waking up the first day, I was fine and had my usual energy levels. Around 11 AM, I started getting hungry and this wasn’t helped by a few people around me at work heating up their lunches and eating at their desks.

I went on a walk around noon and that afternoon, and during this time, was drinking lots of water and had 2 cups of coffee. I was feeling good and not too hungry.

That night, while my girlfriend ate dinner, I avoided the kitchen and got down to work. Lots to do and no distractions for me!

Around 9:30, I decided it was time for bed. I hadn’t ate all day but was still feeling energized. When I laid down in bed, thoughts ran through my mind… “what would I feel like when I woke up? what if I woke up and was starving? should I be nervous here?”

I fell asleep and had a great night of sleep…

36 Hours in with a TON of energy

The next morning, I woke up at 5:05 AM. I sat up in a little bit of a stupor and thought to myself, “Whoa, I feel amazing.”

I had so much energy, I decided I would record that week’s podcast episode in the moment about Fasting, Side Hustles and a BIG Announcement. It was 5:30 AM, and I was so excited talking about my fast during the fast. I talk about it the first 15 minutes of the podcast episode.

My energy levels were unbelievable and I didn’t even need coffee.

That being said, I wasn’t doing a strict water fast, and did opt for coffee throughout the 48 hour fasting period.

When I was recording the episode, I was drinking water and a cup of coffee, and after finishing my recording, I got ready for work and headed off on the bus.

Things were looking good. 8 hours to go.

Hitting a Wall but Pushing Through

Again, around 11 AM, I started getting really hungry and I started suffering a little. Getting up at 5 the last two days wasn’t helping, nor was the stupid work I had to do.

That second afternoon, I was feeling down, a little weak and a little bit tired.

I finished my 48 hour fast with an apple, banana and some tacos at 5:30 on Tuesday – 48 hours after I started.

Reflecting on the 2 day fast, I was worn down but hanging in there.

After eating at 5:30 PM, I felt a little better but was still feeling tired and a little down (probably since I woke up at 5 AM both Monday and Tuesday though let’s be honest).

Going to bed the first night with an empty stomach was interesting, but I’d been drinking a ton of water all day – so really, it wasn’t an empty stomach. I woke up the next morning with a TON of energy.

I was very hungry both days around 11 AM. This was 6 hours into my day on both days. In both cases, I drank more water and went on a walk through the Downtown Minneapolis skyways. By 12:30 PM, I was able to focus in again. With this combination of focus and energy, I was able to get a ton of work done and was loving it.

Overall, I’d say it was a good choice to do this 48 hour fast. It was an amazing experience and was very happy about this endeavor.

6 Steps and Tips for Completing Your First 48 Hour Fast

If you’ve decided to give a 48 hour fast a chance, here are some tips for getting the 48 hour fast done:

  1. Start with a 24 hour fast a week or two before the 48 hour fast
  2. Eat a big meal around 4-5 PM before starting your 48 hour fast
  3. Use sleep to your advantage
  4. Drink plenty of liquids to keep you full over the two day span
  5. Stay positive, listen to your body, and be strong
  6. Make your first meal back simple and healthy

Whether you are going for a 12 hour fast, a 24 hour fast, a 36 hour fast, a 40 hour fast, or a 48 hour fast, these tips for getting through your fast will be beneficial for your fasting goal.

Let’s dive into each of these tips for completing your first 48 hour fast in more detail.

1. Start with a 24 Hour Fast to Prepare for Your 48 Hour Fast

First, if you’ve never done a longer fast before, you should start with a shorter 24 hour fast. This way, by doing a shorter fast, you can get an understanding of how your body might respond to fasting.

There are a number of interesting feelings I experienced when I fasted for the first time, and the first time I did it, it definitely was stressful and nerve wracking.

But after doing it a few times, I now know how to cope with those thoughts and feelings.

If you can successfully complete a 24 hour fast, but you still aren’t comfortable with trying for a 48 hour fast, maybe it makes sense to try doing a 36 hour or 40 hour fast.

2. Eat a Bigger Meal at 4-5 PM Before Starting

Once you are confident you can do a 48 hour fast, then I’d recommend eating dinner a little bit earlier and if you are nervous about the fast, make it a big meal!

I suggest an earlier dinner because the second afternoon can be very difficult, and having a 5 PM cut off versus a 7 PM cutoff can make a world of difference mentally.

3. Use Sleep to Your Advantage

Something which is overlooked when fasting is it’s a lot easier to kill time if you are sleeping.

While I had a ton of energy that second morning, it may have been better for me to sleep a little more to help pass the time.

4. Drink Plenty of Liquids When Fasting

Next, make sure you are drinking a lot of water during your fast. First, this will help with flushing your system, but also, by drinking a lot of water and other liquids, you can feel more full.

Drinking water is very important for general health, but even more important when you aren’t eating and trying to stay sane.

5. Listen to Your Body When Doing Your 48 Hour Fast

Finally, there will be moments when you want to eat and don’t want to push through. Staying positive, drinking water, and resting could be best here – but also, if you become shaky or actually NEED food, then it is totally okay to end your fast.

Being self-aware is incredibly important for success in this world, and being healthy rather than fainting or becoming sick because you tried to push through is a better scenario.

6. What to Eat After Breaking Your 48 Hour Fast

After reaching 48 hours, ease into eating with some fruit or vegetables, and then once you know your body is ready, you can eat a bigger meal.

After your 48 hour fast,  you don’t want to go too fast into eating a big meal (even if you are super hungry at this point)!

Your body was getting used to not having a lot, and it might reject your meal if you eat too fast or too much.

I found I was fine after eating a banana, but I’ve read about other people who after 72-96 hour fasts who come back to fast and having to throw up their first meal because they over did it.

Let’s not do that and take it slow to start after breaking our 48 hour fasts 🙂

Takeaways from This 48 Hour Fast

I hope you’ve enjoyed this article about the story of my 48 hour fast!

I have a few takeaways for you about fasting in general and my experience of this 48 hour fast.

First, eating in general is largely psychological. When you wake up, you aren’t hungry – you are thirsty. Drink some water and see if you are still “hungry” and “can’t go without breakfast”. I used to not drink water or coffee in the morning until after my meal, and now I drink it when I wake up and feel great!

Second, again, think back to our ancestors (hunter gatherers). They didn’t have a grocery store and they certainly didn’t have the luxury of eating 3 meals a day. Why is this narrative pushed? Is it a marketing ploy to sell bacon and cereal (I do love breakfast foods though…)

Human biology is undeniable…

I’m definitely going to be doing another 48 hour fast in the near future, and plan on pushing the limits to a 3 or 5 day fast as well! The experience I had at the 36 hour mark was unbelievable, and literally felt like I had tapped and unlocked my full potential. It was sooo powerful.

I’m glad I’ve started fasting, and if it makes sense for you, I’d say give it a try! Even skipping breakfast once in a while could lead to some great health benefits.

Readers: have you ever tried fasting? What are your takeaways from reading about this? Do you think you’ll try something like this?


Health. Wellness. Intermittent Fasting. Fasting.

Health. Wellness. Intermittent Fasting. Fasting.

Health. Wellness. Intermittent Fasting. Fasting.

Health. Wellness. Intermittent Fasting. Fasting.

Health. Wellness. Intermittent Fasting. Fasting.

Health. Wellness. Intermittent Fasting. Fasting.

How to successfully complete a 48 hour fast
How to successfully complete a 48 hour fast
How to successfully complete a 48 hour fast
How to successfully complete a 48 hour fast
How to successfully complete a 48 hour fast
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Comments 22

  1. Welp, more proof you’re not human. 🙂
    I was amazed at how energetic you were and you did not try to kill me on our Skype chat during your crazy fasting journey. I would DIE without coffee though. (and by coffee, I mean a splash of coffee with tons of cream and sugar!)

    1. I am a 53yo male.
      I work a 7 on 7 off roster day night rotating shifts, staying in a mining camp while rostered on.
      I started intermediate fasting in December 2018 my routine was to eat once per day for the seven days I was rostered on. Then eat normally on my rostered days off even enjoying a few beers each day.
      On my rostered days on I go to the gym each day for an hour and worked 12.5 hour shifts so it was easy to keep my mind active.
      I dropped from 110kg to 98kg in 7 months, felt and looked great.
      Even had to go out and buy new clothes that fit.
      In July 2019 I had a shoulder injury and subsequent surgery, which had me off work, very inactive and eating as if on days off for 7.5 months until Feb 2020. In that time my returned to the110kg.
      Feeling pretty discussed in myself I’m on a mission to get back to the 98kg and beyond, so I have dived straight back into my routine of intermediate fasting.
      My first tour at work I through in a 48hr fast just to see how I would cope.
      Essentially all I did was skip one meal from my allready establishes eating routine.
      The result was good, I weight myself only on the last day of my days off an I had dropped from 110 to 107 in one tour!
      I am on my 2nd tour at work now and on night shift, I’m on my 4th day of the tour and eaten only 2 meals, so I have completed a 48hr fast, eaten a meal then another 48hr fast at this point I’m 45hrs in.
      I intend doing 3 x 48hr fasts on the trot to see my 7 day tour out only eating 4 meals, working a physical job and going to the gym each day.
      I would never have thought I could go 48hr without eating, similar to I would never have thought going 24hrs was possible.
      I found it challenging until it became routine.
      As far as side effects go, other than a feeling of hunger that comes and goes it’s all been positive so far. No fatigue, no dizzy spells, nausea or weakness.
      Looking forward to weighing in to see the results.

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        Wow Darren, thanks for sharing your story and that’s some amazing progress! I do think it’s crazy how the human body can adapt for the better – even after being conditioned by the media that sugary breakfasts are the most important meal of the day…

        I look forward to hearing if you are able to get back to 98kg and maybe even below! Keep up the good work!

  2. I hit my 36-hour mark while finishing up at the gym. It’s almost crazy, but not so crazy reading your experience for waking up at 5 am feeling energized….I was the exact same way this morning. I have talked myself into going for the 48 hours….because why not. Green tea and water have been my thing. Thank you for this read.

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      Hey Megan! it’s definitely crazy… I think a 48 hour fast will be interesting to see! the second half is definitely tough. Let me know how it goes!

  3. I do a 48 hour fast every Monday (last meal Sunday night, eat again Tuesday at supper) and have lost 40+lbs. I always feel hungry Monday night but push through and all day Tuesday I feel like a super hero. I havent pushed past 48 hours but am 37 hours into my fast right now and am considering going 60 hours. Good luck and keep going!

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      1. Stronger, no, but I dont exercise other than walking my dog. More healthy, yes, in some ways. I feel lean I guess is the most physical feeling. Mentally, I feel like a million dollars when I am fasting.

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  4. I’m 40 hours into my fast and feel amazing! Full of energy and am not even faltering at all. My mind tells me I’m hungry but water is my best friend right now.

    1. Post

      Thank you Amy for the comment!! Hope the remaining 8 hours go well and you succeed in your fast 🙂

      Water is so important when fasting, green tea and coffee also work for me when I’m not eating too!

  5. Fasting is the way to go, I’m 45hours out of 48 and then I get to eat. Next time I will go for 72 hours, if my wife Let’s me lol

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      72 hours is something I’ve wanted to try… maybe soon 🙂 yeah, that’s the problem – life gets in the way and when fasting it can be tough!!

  6. I’ve been doing a weekly 24 hr fast for about a year now, so far so good. Only missed 2weeks, not consecutively, but right back into it. Oh yeah, I’m 69 years old and workout 3 days a week. Cardio and weights at the gym. 5 am.
    I’m scheduled for a bloodwork tomorrow so I’ve decided to fast the day before my regular fasting day, Wednesday’s, so hopefully I will be able to complete a 48 hour fast and my fasted workout.
    Thanks Erik, your story is encouraging.

    1. Post

      Hey Mike!

      Thanks for the comment! I’m looking to do a 24 hour fast monthly, but wow, weekly would be awesome. I hope your workout goes well after your bloodwork!


  7. Hi Erik, last month I completed my first 72hr fast, I started 4 days prior to my 59th birthday. I’m happy to say that I was successful. I’ve decided to start a monthly (48hrs) fasting regiment. I’m hoping to slow down the “aging” process. thank you for sharing your fasting journey, it was inspiring. BTW, I’ve been intermitting fasting 16-8 for over 2yrs.; I truly believe that our bodies do benefits from fasting.

    1. Post

      Thanks Robin for you comment and that’s really cool you were successful with your fast!

      It will be interesting to hear about your progress and to see if it truly does slow down aging (though being more health conscious will be amazing compared to those who are of similar age!)

  8. Erik!!! I am so happy I stumbled upon your article. For one it inspired me to potentially blog/revamp my thoughts of wanting to write a book. I am a school counselor and personal trainer. I have hit my 48hr mark around 8pm tonight. My husband said I should eat, but I’m up for the challenge of another 24 HOURS!! I feel more focused, energized, bubbly, and motivated. I also have worked out the last two days during my fast…OMG right 😳 my goal is to make it to 8pm tomorrow and eat light nuts as a snack. I did use vegan bcaa powder today with my water and have been taking activated charcoal at night. I’ve had nothing but water no coffee or tea!

    1. Post

      Hey Keisha! I love it! that’s so awesome and I’m happy you’ve shared your story here with me 🙂 Best of luck in the next 24 hours! Hope it goes well.

  9. Pingback: 48-Hour Fast: How-To, Benefits, and Downsides -

  10. Hey Erik, Recently did a 48 hour fast for the first time, wasn’t too hard, im 58 and in decent shape. I like the mental clarity while fasting. I usually do a 16-8 IF, but usually do OMAD. Fasting has changed my life and health for the better. OMAD is all we really need.

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