Expert Q&A

Going for my first 36 hours. Any tips and how it connects to gut health and inflammation

Preparing for Your First 36-Hour Fast

As the founder of CFP Weight Loss and author of The Metabolic Reset Protocol, I've guided thousands through their initial extended fasts. A 36-hour fast means going from dinner one day to breakfast two days later, giving your body a full day and night without calories. For beginners aged 45-54 dealing with hormonal shifts, this isn't extreme—it's a strategic reset that many find easier than daily calorie counting.

Start hydrated: Drink 3-4 liters of water with electrolytes (sodium 3-5g, potassium 1-2g, magnesium 300-400mg daily). Black coffee, green tea, and bone broth (if under 50 calories) are allowed in my gentle approach. Ease in by having a high-protein, high-fat dinner the night before—think salmon, avocado, and broccoli—to stabilize blood sugar and reduce hunger spikes common with diabetes and blood pressure management.

Practical Tips to Manage Challenges

Joint pain making movement tough? Light walking or stretching helps without strain—aim for 20-30 minutes daily. Most report hunger peaks at 18-24 hours then subsides as ketosis begins around hour 20. If dizziness hits, add a pinch of sea salt to water. Track symptoms in a simple journal: energy, mood, and cravings. This builds confidence after past diet failures.

Avoid overexertion. My method emphasizes rest—nap if needed. Break the fast gently with bone broth or steamed veggies, not a heavy meal, to prevent digestive upset. Consistency matters more than perfection; even completing 24 hours delivers benefits.

How 36-Hour Fasting Connects to Gut Health

Extended fasting triggers autophagy, your body's cellular cleanup that directly repairs the gut lining. After 24-36 hours, gut bacteria shift: harmful strains decline while beneficial ones like Akkermansia muciniphila increase by up to 30% in studies. This strengthens the intestinal barrier, reducing leaky gut that fuels midlife weight gain.

In The Metabolic Reset Protocol, I explain how fasting lowers insulin, allowing your microbiome to diversify. For those overwhelmed by conflicting nutrition advice, this is simple—no complex meal plans required during the fast itself.

Reducing Inflammation and Supporting Hormonal Balance

Chronic inflammation drives joint pain, insulin resistance, and stubborn belly fat after 45. A 36-hour fast drops C-reactive protein markers by 20-40% and cuts pro-inflammatory cytokines. It also balances cortisol and estrogen, addressing hormonal changes that make weight loss harder.

Combined with my low-inflammation eating windows, clients see improved blood pressure and blood sugar within weeks. Insurance barriers? This costs nothing but time. Start once weekly, pair with my 16:8 on other days for sustainable results without embarrassment or overwhelm. You'll rebuild trust in your body—one fast at a time.

💬 What the Community Says

The community shows cautious optimism about 36-hour fasts, especially among 45-54 beginners frustrated with yo-yo dieting. Many share success stories of reduced joint inflammation and better digestion after the first few attempts, with autophagy and gut microbiome improvements frequently mentioned in success threads. A common debate centers on electrolyte needs—some report headaches without salt supplementation, while others emphasize starting slower at 24 hours to avoid fatigue. Those managing diabetes note careful blood sugar monitoring is essential, and several appreciate the simplicity compared to complicated meal preps. A vocal minority finds the hunger overwhelming at first but says it fades, leading to unexpected energy boosts. Overall, lived experiences highlight gradual adaptation as key, with positive reports on hormonal balance and weight creeping down without gym time.
Cite this answer
Clark, R. (2026). Going for my first 36 hours. Any tips and how it connects to gut health and infl. *CFP Weight Loss*. https://ask.cfpweightloss.com/ask/going-for-my-first-36-hours-any-tips-and-how-it-connects-to-gut-health-and-inflammation
Russell Clark, FNP-C, APRN, FNP-C, APRN
About the Author

Russell Clark, FNP-C, APRN, is the founder of CFP Weight Loss in Nashville and CFP Fit Now telehealth. Over 35 years in healthcare — Army Nurse Reserves, Level 1 trauma ER, hospitalist — he developed a 30-week protocol integrating real foods, detox, and low-dose tirzepatide cycling that has helped hundreds of patients lose 30–90 pounds. He and his wife Anne-Marie lost a combined 275 pounds using the same protocol.

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