Fasting That Works

Fasting That Works Dr. John D’Ambrosio, DC with 32 years of experience. Author of “Fasting That Works.” I lost 20 lbs in 2 months and kept all my muscle & strength.

I teach you how to lose fat (not muscle) through fasting. https://cd62-drjohn.systeme.io/

04/17/2026

So many people were hitting their goal weight after buying my book, and were panicking and didn’t know what to do to stop losing weight that I actually had to add a chapter to my book covering exactly that! Nice problem to have, huh?

04/16/2026

Here’s the real reason people are buying my book and purchasing my course, and this surprised even me!

04/08/2026

Stop stoking the "metabolic fire" and start flipping the switch. You don't have a discipline problem; you have an insulin lock. Grab the free 2-Step Protocol at the link in my bio to start burning fat for fuel.

04/06/2026

Stop fighting your biology with willpower. You don't have a discipline problem; you have a biological lock. Grab my free 2-Step Protocol at the link in my bio to flip the switch and start burning deep fat for fuel.

Download the Free 2-Step Protocol Cheat Sheet.

04/02/2026

Your heart knows if your fast is failing.

Most people use fasting to "reset," but if your Heart Rate Variability (HRV) is low, your body doesn't view a fast as a reset. It views it as a threat.

Fasting is a metabolic demand. If your system is Solvent (High HRV), you drop inflammation and build resilience. If your system is Bankrupt (Low HRV), you are just adding more stress to a redlined engine. This is why you feel exhausted, stuck in a plateau, and "foggy" despite doing everything right.

I use 33 years of clinical data to ensure your fasting protocols actually work for your specific physiology.

Grab the Fasting That Works Cheat Sheet/Book in my bio to start the right way.

03/27/2026

Generic advice is for generic people. Learn how to use your own body's feedback to optimize your training, recovery, and fasting for the best results of your life.

03/27/2026

Weight loss isn't a math problem; it's a hormonal one. If your insulin is high, your fat is locked. Learn how fasting is the key to finally opening the door.

03/26/2026

A 12-hour fast is just digestion. True fat-burning requires pushing past the 16-hour mark to lower insulin and clear glycogen. Learn the science of the metabolic switch.

03/25/2026

The 42-hour fast is the ultimate metabolic reset. Learn how to push past the glycogen wall, trigger deep autophagy, and protect your muscle with Growth Hormone spikes for permanent fat loss results.

03/25/2026

Training fasted is not a sacrifice; it is a performance upgrade. Learn how your body uses adrenaline and stored fat to power your most intense sessions without the sugar crash.

03/23/2026

Ketosis is a metabolic state, not a fat-loss miracle. If you're constantly eating fat, you're not burning your own stores. You need a fasting window to bridge that gap.

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