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How to Do a 3-Day Sardine Fast (What to Eat + What to Expect)

27.9K views· 1,562 likes· 34:36· Feb 19, 2026

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*Thanks to LMNT for sponsoring this video! Head to http://DrinkLMNT.com/JennyMitich to get your free sample pack with any purchase. Ready to try a 3-day sardine fast but not sure what to eat, how much, or what your body will do? In this video, I’m taking you step by step through a complete beginner sardine fast walkthrough—and I’m doing it with my husband, Goran, for his first sardine fast ever. We film Day 1, Day 2, and Day 3 in real time so you can see exactly what to expect: what we ate, how we handled hunger and cravings (if they showed up), energy changes, and how to make this simple reset actually doable. We also share our CGM (continuous glucose monitor) trends plus Keto-Mojo blood ketones and blood glucose readings so you can see how glucose stability and ketone levels shift during a sardine fast. You’ll learn: What a sardine fast is (and how it works as a protein-sparing modified fast / PSMF-style reset) The best sardines to buy (including no seed oil label tips) How many cans per day most people use and how to structure meals Electrolytes and hydration tips to avoid headaches and fatigue Common mistakes that make people quit early Our results and takeaways after 72 hours—plus who this is (and isn’t) a good fit for If you’re doing carnivore, keto, or low carb and you want a simple, structured 3-day reset, this is the full walkthrough to follow. If you'd like my free sardine fasting cheat sheet, head over to Instagram and follow me over there, then send me a message that says SARDINE. Ill send it right over to you: https://www.instagram.com/mamamitich/ Some links may be affiliate links, which means I receive a small commission if you purchase through the link. Thanks for your support! 15% off KetoMojo Meter Kit (discount applied at checkout): https://bit.ly/3ArkH35 Keto-Mojo website: https://keto-mojo.com/ CGM I use: NutriSense: Get $50 off your first month with code JENNYMITICH: https://bit.ly/3VFWVYu Use code Jenny30 at this link to get $30 off a Tastee Air Fryer: ⁠⁠https://www.tastee.net/pages/jennymitich Favorite Sardines / Tinned Fish Minerva: https://rstyle.me/+3ZFOt5GtT7iSSem8FaBxLg Fishwife w/ peppers: https://rstyle.me/+uP08hblst1yRGCyZ1kXdXA Fishwife w/ lemon: https://rstyle.me/+8lX4V0ORYF3PDwVsIv9NGw Nuri spiced: https://rstyle.me/+slWLKagLtw3GSpNm5So_Fg Matiz: https://rstyle.me/+WOf6d491puX5WWfFM4UWtw Baltic Gold: https://rstyle.me/+uxFGzikzYQTFZZkQKkymDA Nice Cans 10% off with this link: https://justnicecans.com/?ref=JENNYMITICH ORDER MY BOOK COMPLETE CARNIVORE: Amazon: ⁠⁠⁠⁠https://amzn.to/4oFNsgj B&N: https://www.barnesandnoble.com/w/complete-carnivore-jenny-mitich/1146838850?ean=9781628605761&st=AFF&2sid=Random%20House%20Inc_8373827_NA&sourceId=AFFRandom%20House%20Inc Target: https://www.target.com/s?searchTerm=9781628605761&clkid=90438253N6c2f11eea9df03dae139e2fb&cpng=PTID1&lnm=81938&afid=Penguin%20Random%20House&ref=tgt_adv_xasd0002 For international viewers: https://blackwells.co.uk/bookshop/product/Complete-Carnivore-by-Jenny-Mitich/9781628605761 CARNIVORE T-SHIRTS: Want to share you love of Carnivore with the world? Head over to https://jennymitich.dashery.com/ and get your gear today! COACHING: Book a One on One Coaching Call with me and get your questions answered! https://calendly.com/mamamitich/30min NEW 2nd Channel! Jenny Mitich: Etcetera: https://www.youtube.com/channel/UCumKiKlGERkffvlb0wLQgRg Want to see your name at the end of every video? Become a Channel Member and support the testing and data gathering that I do! https://www.youtube.com/channel/UCNpz0ec0jWJlFO7ptYdlAJw/join https://www.patreon.com/JennyMitich Products and Services I Use Everyday: My go-to skincare: KaramMD ➡️ Get 20% off with code Jenny20: https://bit.ly/41yDe8j Accelerated Iodine, use code Jenny5: https://acceleratedhealthproducts.com/Jenny Get 20% off BIOptimizers Magnesium Breakthrough and Probiotics using this link: https://bit.ly/46S9vdq Where to Order Blood Work Online: Own Your Labs, online ordering, self pay: https://ownyourlabs.com/ Own Your Labs uses Labcorp for the blood draw Use code JennyMitich to get 10% off your order on Own Your Labs (not an affiliate link, I just love Own Your Labs and want to support them!) Butcher Box is my go-to for ethically and sustainably sourced meat. Use this link for an amazing deal: https://butcherbox.pxf.io/g1ZVK5 Use code JennyMitich to get 10% off Carnivore Bar! Pair this code with the 10% subscription discount to get up to 20% off: https://carnivorebar.com/ #carnivore #carnivorediet #carnivoretips #carnivoreresults Business inquiry? Email me at mamamitich@gmail.com We are participants in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.

About This Video

In this video I walk you through exactly how to do a 3-day sardine fast—what to eat, how to set it up, and what you can realistically expect day by day. I’m doing it alongside my husband, Goran, for his very first sardine fast, so you get the full beginner perspective in real time: Day 1, Day 2, and Day 3. I break down what a sardine fast actually is (think PSMF-style reset), why it can be helpful when you’re stalled, and how to keep it simple enough that you’ll actually finish it. I also cover the practical stuff people get hung up on: which sardines to buy (including label tips so you’re not accidentally doing seed oils), how many cans per day most people do, and how to structure meals so hunger and cravings don’t run the show. We talk electrolytes and hydration (because headaches and fatigue are usually an electrolyte problem, not a “you problem”), plus the common mistakes that make people quit early. And because I’m obsessed with data, we share CGM trends and Keto-Mojo blood glucose/ketone readings so you can see what happens to glucose stability and ketones across the 72 hours. I wrap it up with our results, takeaways, and who this reset is (and isn’t) a good fit for if you’re carnivore, keto, or low carb.

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