7,000+ Five-Star Reviews

FAST TO BURN FAT. WITHOUT HUNGER

Get everything you need for a safe 3-day fast to curb your appetite and cravings, boost your metabolism, and shed those extra pounds – without the usual fasting symptoms like feeling hungry, tired, or nauseous.

Approved by Dietitians free shipping blended in the Usa 14-day money back guarantee
3-day fasting challEnge

Burn fat fast

When you stop eating, your body looks for a stored fuel to burn for energy – that's your fat.

Curb hunger and cravings

Step back from eating and reset your cravings—learn to spot true hunger vs. emotional hunger, so those pesky cravings finally back off.

Keep the pounds off

Fasting for 3-days every 1 to 3 months can help you boost your resting fat-burn rate and prevent weight gain – even without changing your diet.

What's inside the FastBurnBox?

The FastBurnBox guidebook, post fast mealbook & Fasting app

The FastBurnBox guidebook, post fast mealbook & Fasting app

$99.99 value

Grab the FastBurnBox Book for a safe 72-hour fast, a month's free access to the DoFasting app to stay on track, plus a Post-Fast Workout Guide and Meal Plan for fast results with easy workouts and delicious meals.

Anti-Hunger Fiber Shakes

Anti-Hunger Fiber Shakes

$59.99 value

Worried about hunger? Sip on our refreshing, grapefruit-flavored fiber drink twice a day to stay full and keep your fast intact—just 10 calories, but big on keeping you regular and bloat-free.

electrolyte booster packs

electrolyte booster packs

$32.99 value

Enhance your fast with our zesty lime electrolyte blend, designed to keep you hydrated and balance micronutrients—crafted just for the FastBurnBox protocol.

Bone broth Packs

Bone broth Packs

$29.99 value

End your day without the hunger—our go-to cheat meal satisfies cravings and restores micronutrients, all without breaking your fast.

How it works

  1. Intro

    Body and mindset preparation

  2. Start

    Body switch to fat burning

  3. Reset

    Enter autophagy - cell regeneration

  4. Elevate

    Full-force fat burning stage

  5. Transition

    Safe regression to routine with new results

BENEFITS

  • Lower cholesterolCellular repairImproved metabolismDisease prevention
  • Weight lossReduced cravingsEnergy boostFat burn
  • Mental clarityClear skinImproved insulin sensitivityStress reduction

WHAT TO EXPECT

Digestion (0-4 hrs)

Food is turned into glucose. Unused energy is stored away.

Early fasting (4-12 hrs)

Your digestive system begins to rest. You may feel hungry.

Partial ketosis (12-18 hrs)

Your metabolism kicks up, and the fat burning begins.

Active ketosis (18-28 hrs)

Increased mental clarity. Cells renewing rapidly.

Deep ketosis (28-36 hrs)

Extreme fat-burning state.

Autophagy (36-48 hrs)

Peak state of cellular regeneration. Inflammation goes down.

Growth hormone rises (48-60 hrs)

Increase in hormones vital for muscle repair and growth.

Insulin resistance drops (60-72 hrs)

Your base level of natural hunger decreases.

WHY YOU NEED IT

Burn fat fast

A quick 3-day fast allows your body to easily start burning fat for energy. You naturally switch from fat-storing mode to fat burning.

Keep the pounds off

Just 3–4 metabolic resets per year can elevate your resting fat-burning rate, helping you sustain weight loss effortlessly.

Boost your metabolism

Safe fasting gives your body a full reset, igniting a stronger, long-term baseline for fat burning.

Reduce inflammation

Constant digestion drains your body's resources. A focused 3-day fast frees up energy for deep repair and rejuvenation.

Unboxing the FastBurnBox kit

THEY LOVED FASTBURNBOX

Never thought I could fast without feeling weak, but I lost 56 in a year lbs and felt great!
David P.
I've been fasting on and off for the past few months and the results are incredible – 29 pounds lighter and feeling the best I have in 10 years.
Brenda M.
At first, I was nervous about trying fasting, but this kit made it super easy. The hardest part was getting over my initial fear, but after that, the benefits were amazing.
Brandon K.
Effortlessly lost over 21 pounds in less than 3 months, and the inches just disappeared. The change in how I feel and look is incredible.
Jessica F.

JOURNEY LIKE NO OTHER

7,000+ Five-Star Reviews

SUMMER SALE - UP TO 70% OFF!

FastBurnBox Ultimate kit

From$199.69per box$519.96Bundle price

FastBurnBox Ultimate kit
  • 3-day supply of fiber shakes, bone broths & electrolytes
  • Pre, during, and post-fasting guides for sustainable results
  • Free shipping included

FAQS

Will I feel hungry?

Don't sweat it! We've got a delicious strawberry-flavor fiber drink that will keep you feeling full without messing up your fast because it’s practically zero calories.

Will I feel tired?

Actually, most folks find they get a nice energy boost during fasting because your body doesn't have to deal with digesting food. Plus, we'll show you what to do before your fast so your body has plenty of energy in the reserves to weather the fast.

Will I get 'keto flu'? (headaches, dizziness, nausea)

Don't stress! We'll show you how to avoid common mistakes that lead to keto flu. Stick to it, and you won't have to deal with those nasty symptoms.

What if I mess up my fast and don't have enough fiber drink left to start all over again?

No worries! You can easily order a refill. Or you'll get a refill automatically with our 6-month or 12-month plans (just have to wait a bit). That said, you can also fast without a fiber shake – it's totally doable and many of our customers love the challenge.

I'm not sure I have time to fast. What about dinners with friends and birthdays?

Totally get it! We suggest planning your fast for a long weekend or during a holiday when you have more freedom in your schedule. Sure, it might be a bit inconvenient, but remember, it's your health we're talking about here – maybe it's worth the effort?

Is fasting safe?

Generally, yes, but it depends. If you've got diabetes, you should chat with your doctor first since it can mess with your blood sugar. For those who are pregnant or breastfeeding, it's usually a no-go because your body needs extra food for the little one. Best to check with a healthcare pro to be sure fasting's cool for you!

How's FastBurnBox different from other fasting methods (like intermittent fasting and fasting-mimicking)?

A 3-day fast like FastBurnBox can be more straightforward and impactful than fasting-mimicking or intermittent fasting. Here's why: Simplicity: With a 3-day fast, you have a clear start and end. There's no need to constantly plan meals or watch the clock for eating windows, which you often have to do with fasting-mimicking or intermittent fasting. Intensity and Results: A full 3-day fast can kickstart significant metabolic changes in a short period. It's like a hard reset for your system, potentially leading to more noticeable results compared to the gradual approach of intermittent fasting or the partial fasting of fasting-mimicking plans.

What’s in your fiber drink?

Glucomannan is the key ingredient, it absorbs water and keeps you full during your fast, which helps with hunger pangs. Plus, it's only 10 calories, so it won't mess up your fast.

What happens after I pay?

Your FastBurnBox is going to be dispatched within 3–5 business days. There, you will find everything you need to make the most of your experience and achieve your goals.

Is FastBurnBox safe?

The FastBurnBox program is meant to support general health. Use it as part of a healthy lifestyle. If at any point you feel unwell, please consult a qualified healthcare professional.