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While MK-677 doesn’t suppress testosterone, staying on it year-round may increase the likelihood of: Mild insulin resistance GH receptor desensitization (potentially, though evidence is limited) Water retention or appetite fatigue Diminished sleep response over time Best practice : Use MK-677 in 8–20 week cycles , then take 4–6 weeks off During that time, maintain sleep routines, training intensity, and recovery nutrition Monitor biomarkers like fasting blood glucose , A1C , and blood pressure “Growth hormone secretagogues are well tolerated with long-term use but may benefit from periodic cycling to preserve efficacy and manage metabolic feedback.” — Hameed et al., Hormone Research in Paediatrics How to Maintain Results Post-Cycle Stay in a controlled calorie intake (either slight surplus or maintenance) Keep training intensity high, but adjust volume to avoid CNS fatigue Prioritize high-quality sleep with ZMT and low-light routines Continue strategic cardio (LISS and zone 2 work) for metabolic and cardiovascular health Use data from the cycle to adjust your long-term approach (biofeedback, bloodwork, training logs) Working with a coach from The Swole Kitchen can help you transition smoothly , maintain results, and plan your next performance phase strategically

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