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Science Explained: What Happens When Fasting Starts Working? – 8 Signs You Need to Know.

324K views · Dec 25, 2025 · People & Blogs

Comments · 370

  • @HealthMetabolicScience · 8 months ago · pinned

    👉 What Most People Get Wrong Before Starting Intermittent Fasting — you think you know how to fast… but nearly everyone makes the same simple mistakes that silently sabotage results. From hidden hormones to timing myths, this video exposes the truth behind common fasting traps nobody tells you about — until now. Ready to finally get it right?<br>📺 Watch here: <a href="https://www.youtube.com/watch?v=kFYOFm1I-1M">https://youtu.be/kFYOFm1I-1M</a>

    15

  • @nicoflores5242 · 8 months ago

    I’m on day 9 of a 21 day fast and I have got all the signs so far and today is the hungriest that I have been so far but I’m staying strong and going for an hour long walk. I’ve been losing about a pound or two a day also. Praise Jesus

    234

  • @MoleculeXmolecule · 7 months ago

    I&apos;m no longer diabetic thanks to intermittent fasting. It&apos;s also working wonders on my depression and energy level.

    36

  • @HealthScience-d9w · 9 months ago

    That moment when you feel cold, weird, and hungry… and think something’s wrong. But this video helped me realize that’s exactly when the change begins. Wild how the signs we fear are actually signals of transformation.

    140

  • @kaytahg12 · 8 months ago

    <a href="https://www.youtube.com/watch?v=Grgr80fBt7Q&amp;t=335">5:35</a> Learning that &quot;metallic breath&quot; is actually biochemical proof of fat burning was so reassuring. It’s not just bad breath; it’s the smell of my liver producing ketones! 🍎🔥

    60

  • @s.williams1739 · 7 months ago

    I&apos;ve been fasting for years and there have been so many benefits. It really makes you appreciate healthy, clean eating and made me evaluate everything I put in my body.

    22

  • @leetenkstation2401 · 5 months ago

    Around the 48 hour mark I start feeling full like I ate a meal.

    7

  • @saiyansnake · 6 months ago

    I’m 20 hours into a 36 hour fast, I just did an hour of cardio (Treadmill, 10 incline, 3.2 speed).<br>I was absolutely starving! I just drank 4 oz of water and now feel perfectly fine lmao.

    21

  • @piscesjl · 8 months ago

    Agree with this message.. as someone who fasts, I experienced all of this, but now my body has adapted and it feels great.. I lost weight, my mind is a lot more clear, certain ailments seemed to have gone away.. but keep in mind that I also eat right and exercise a lot now.. you have to do this gradually; give your body a chance to adapt over time.. but the autophagy and fat burning is real as your body becomes more metabolic flexible..

    38

  • @christinelopez2098 · 8 months ago

    Fasting when done right is so important. &nbsp; I love it. &nbsp; &nbsp;I feel so much better. &nbsp; &nbsp;It disciplines a person to detox and become more healthier. &nbsp; &nbsp;It’s a wonderful way to live!

    25

  • @robineervin8633 · 9 months ago

    Good to know feeling cold is normal

    19

  • @alanikeiser · 7 months ago

    I love fasting!! I’ve been doing it for 27 years, a few times every year

    23

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