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72 Hours Fasting. My Full Guide based on my previous post
Following my previous post here: https://www.reddit.com/r/fasting/comments/1rqt6pf/72hour_fasts_every_23_weeks_changed_my_body_and/ A lot of folks dm'ed me asking about preparation, my routine, etc. I've created this mini-guide on these three parts (its based on my research and observations): Preparation (2-3 Days) Fasting (3 Days) Breaking (2 Days) Few more Before/After starting doing regular 48-72 hour fasts photos: https://preview.redd.it/nvnjzay09bpg1.jpg?width=1622&format=pjpg&auto=webp&s=8ef416490721e5836578b03ef4e5eacb9ab58fe3 1). PREPARATION You decided to fast but do not know where to start. While anyone can jump into fasting right away, in my experience to maximize the ease of fasting you better start with the first part which is your preparation phase. Some people skip this part and having super hard first 24 hours. Our liver stores carbohydrates as glycogen, which is basically your body's first-resort fuel tank. When you fast, your body doesn't immediately start burning fat but instead it first burns through that glycogen reserve. Only once those stores are empty does it make the switch to fat-burning. From my experiece, the shorter the glycogen window depletion the better, easier hunger management, easier headaches ( I have no headaches during 72 hour fast) OK, so what actually you can do 2-3 days prior your fast: Cut carbs and sugar 2-3 days before. It will help you to deplete glycogen prior to fasting starts. No junk food in those 2-3 days is my hard rule (no chips, cookies, etc) Eat a clean, high-protein for 2-3 days, for example, my diet consists of eggs, salmon, grass-fed beef (steaks or minced), chicken and veggies. Stay hydrated, do not forget to drink water Start your fast after dinner. By the time you wake up, you've already slept through 8+ hours. You're almost at the metabolic switch before you even start your day. I like to start fasting around 8-9 PM. By 9AM next day I am already 12 hours in! That's pretty much all I do! I go to the gym regularly, and I do not change anything in my routine prior to fast 2). FASTING The most exciting part! You've started fasting! Congrats! Let's make it smooth and easy to finish! In case, you are not sure what fasting means, it means you do not consume any food (solid or liquid calories) while you are fasting. Generally, fasting itself is very simple process. But people can make it much more difficult by accident. What I mean here is that, ideally, you need to prep your environment and plan ahead little bit. First things first, make sure your environment is supportive and does not require you to constantly fight for your right to fast: Work-Related: If you are not sure how people at work would react, there is no need to tell your co-workers that you are fasting. Check that next 3 days no one is planning to throw a birthday party or fancy lunch break. But if it still happens, find a way to politely decline your presence there! Friends and Family: Same thing here, if you are doing it for the first time, maybe, its better to avoid telling everyone that you are in the midst of it; your friends and family are loving and caring people, but they might not be aware of what fasting is and how it works; some of my friends used to think that no one can live without food for more than 24 hours. If they start persuading you that your fasting is a bad idea or they try to suggest joining them for lunch/dinner - it might be a little bit more challenging to finish your fasting. Trips/Jet lags: I won't recommend fasting if you are changing time zones, it will be an extra stress, which no one really needs in this case Being Busy: Its much easy to fast when you are busy with work, home stuff, etc. BUT it's much more difficult to fast if you are busy with stressful work, home stuff ,etc. So, my suggestion is to model your business during fasting window in a way, where you limit possible extra stress by as much as you can. My sweet spot is usually workloading myself to around 60-70% of max capacity Consumption: I consume only 5 things during my fasting period: Water Electrolytes (I tried multiple brands, but no favourite one) - make sure they do not have sugar and extra calories, if it says it has 5 calories, IMHO it's okay. I have two electrolyte drinks per day Salt. I always add a pinch of Himalayan salt to each electrolyte drink I have Black Coffee. No sugar, no artificial sweeteners, etc. My rule is Max 1 black coffee per day Tea. Same as coffee Workouts: I prefer to workout during my fasting period, but I do that lightly. My go to would be full body workout with 4-5 exercises, 2 set each, 8-10 reps each (can be 2 workouts, can be 3 workouts during my 72 hour fasting period). Stretching is totally fine as well. Also walking: 10k Steps daily is a perfect step target during fasting, but no need to really push and stress about it if you can't make it happen or its not in your daily arsenal in regular days. Naps: Nap as you need, not always I have time to do that, but sometimes it really helps to quickly recharge 3). BREAKING Breaking your fast correctly is important as you do not want to kill the great feeling of empowerment the fasting gives you. My simple breaking routine : Day 1: First 0 Mins: Beef Broth (200ml) Next 30 mins: One boiled egg with salt Next 30 mins: One boiled egg with salt Then I go to sleep (as I said my optimal time to start fast ~8-9PM and finish around the same time). This timeframe really helps my body to adopt to food intake. Day 2: Next day, in the morning I start again with little bit of beef broth and one egg again. After that I cook myself a little chicken breast and roast veggies for lunch. Dinner, I either skip or have some greek yoghurt. What NOT to do: Do not break your fast with carbs, fast food, sweets, and big portions of food. Your digestion needs time as well as your insulin sensitivity. I have broken my fasts with bread and salad bowls (greek salad with chicken) right away and never had a good feeling after it! I feel that breaking fast the right way is super important. You do not want to feel bloated and tired after your fast! You want to feel great and empowered, so take it seriously and be ready to show up and finish it correctly! FINAL THOUGHTS Every person is different. Bodies are different, lifestyles are different, goals are different. What works incredibly well for me might need adjustments for you, and that's completely fine. Listen to your body, it will tell you a lot during those 72 hours if you pay attention. That said there is one hard line I will always draw: I would never recommend fasting to anyone younger than 24 years old. Your brain is not fully developed until your mid-twenties specifically the prefrontal cortex, which handles decision-making, impulse control, and emotional regulation. During this period your body is also still optimizing hormone levels, bone density, and metabolic baseline. Extended fasting puts real stress on all of these systems. The reset that feels incredible at 35 could genuinely interfere with development at 19. It's not worth it. Beyond age, please DO NOT attempt a 72-hour fast if you: Are pregnant or breastfeeding Have diabetes or blood sugar regulation issues Are on any regular medication without first consulting your doctor This protocol changed my life. I want it to do the same for you but only safely. When in doubt, talk to your physician first. That's it! Not sure if it really covers all previous questions, but feel free to ask more! Happy to help! submitted by /u/jamesmontrea to r/fasting [link] [comments]
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r/fasting |
jamesmontrea |
Mar 16, 2026 |
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Intermittent fasting has severely damaged me
For the past year or so, I have been doing intermittent fasting. I probably get downvoted for this because most people in this sub are highly pro intermittent fasting. I just want to add my negative experience with it. Initially I felt great. My energy was good, I was losing fat, I saved a lot of time not having to prepare food. However, over time, many things went downhill. I started to feel cold, my energy was down the gutter, my sex drive declined, and I became a little neurotic about food. I was thinking about food constantly. I measured my hormones, and my estradiol and thyroid hormones are quite low (at the lower end of normal). I stopped intermittent fasting but recovery is stubborn, hormones somewhat improved but I only feel slightly better now. It has been about 1 month since I stopped but I still feel cold and sleepy and my personality is much less "bubbly" than it was before. Also, I need much longer to get going in the morning. My hair and skin are not as good as they were before. I am much more fatigued than before and it only barely got better after stopping. I started IF because so many people in online communities and fitness/health influencers are vouching for it. Unfortunately, my experience was not as "advertised". I researched this shit for many many hours. The best explanation I have found was in this article: My Experience With Intermittent Fasting In the article, that author describes his own experience, which seems to be very similar to mine. The author also goes quite detailed into the neuroscience of it. In the article, the author describes how intermittent fasting can cause hormone imbalances and also potentially lead to "metabolic programming". I believe this is what happened to me. If you are interested in this, I highly recommend the article - I found the article eye-opening I just want to put this out there. Before diving into intermittent fasting, it seems that the context is important. I did a lot of research and from different online forums, the scientific literature, and Reddit anecdotes it seems that people who are already lean and insulin sensitive are at much higher risk to be harmed. Conversely, people who are overweight and insulin-sensitive are much more likely to benefit from intermittent fasting. Is there anyone else who was damaged by intermittent fasting? If so, how long did it take to feel "normal" again? submitted by /u/raw_consciousness to r/Biohackers [link] [comments]
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r/Biohackers |
raw_consciousness |
Jan 20, 2024 |