Metabolic switching, done right
Fasting is one of the most powerful biological levers available — triggering autophagy, improving insulin sensitivity, reducing inflammation, and shifting the body into fat-burning mode. But most people do it wrong. The HTS Fasting Protocol defines the correct eating window, fasting duration, breaking strategy, and what to take during fasting to maximize every benefit.
When you fast, your body undergoes a metabolic switch — transitioning from glucose-based energy to fat and ketone-based energy. This switch triggers several critical biological processes: autophagy (cellular cleanup), reduced IGF-1 (linked to delayed aging and reduced cancer risk), improved insulin sensitivity, reduced oxidative stress, and modulation of mTOR — a key longevity pathway. High-quality evidence confirms that time-restricted eating (TRE) is associated with significant improvements in weight, fat mass, fasting insulin, and blood glucose. Critically, the metabolic benefits are greatest when combined with caloric quality — fasting timing alone without food quality improvement shows limited metabolic benefit.
The HTS default is a 16:8 window — 16 hours fasting, 8 hours eating. The eating window should be earlier in the day where possible, aligned with circadian biology. Early time-restricted eating (eating window from approximately 8am–4pm or 10am–6pm) produces superior metabolic benefits compared to late eating windows.
Autophagy — the body's cellular recycling system — begins to activate at approximately 14–16 hours of fasting and increases with fasting duration. It clears damaged proteins, dysfunctional organelles, and cellular debris, reducing the risk of neurodegenerative disease, cancer, and metabolic dysfunction. Autophagy is one of the most powerful anti-aging mechanisms available without pharmaceutical intervention.
How you break a fast is as important as the fast itself. Breaking a fast with high-glycemic foods spikes insulin and negates much of the metabolic benefit. The HTS protocol breaks the fast with protein and healthy fats first, followed by complex carbohydrates — protecting muscle mass while maintaining insulin sensitivity.
Certain compounds can be taken during the fasting window without breaking the fast, while others support the metabolic benefits of fasting when taken strategically.
You've been fasting since your last meal. Do not eat yet. Black coffee, green tea, or water only. This extends the fasting window and continues autophagy and fat oxidation.
Light-to-moderate exercise in the fasted state enhances fat oxidation and metabolic flexibility. Not mandatory, but powerful when implemented consistently.
Break with protein first — eggs, fish, or quality protein. Add healthy fats. Take NMN and Omega-3s with this first meal. Avoid high-glycemic foods for the first hour.
Eat all meals within your 8-hour window. Prioritize protein, vegetables, healthy fats, and complex carbohydrates. Food quality is non-negotiable — timing without quality produces limited benefits.
Final meal of the day. At least 3 hours before sleep — late eating disrupts circadian biology and impairs sleep quality. This completes the eating window and begins the next fasting period.
Blood sugar is the scoreboard. Optimize glucose, insulin sensitivity, and mitochondrial function.
View Protocol