MOTS-c (mitochondrial open reading frame of the 12S rRNA-c) is a mitochondrial-derived peptide that has gained significant attention in metabolic health, longevity research, and cellular optimization due to its unique role in regulating energy balance and metabolic function at the cellular level; encoded within mitochondrial DNA rather than nuclear DNA, MOTS-c acts as a signaling molecule that helps coordinate the body’s response to metabolic stress by enhancing insulin sensitivity, promoting glucose utilization, and supporting fat metabolism, making it highly relevant in studies related to obesity, type 2 diabetes, and metabolic syndrome; research has shown that MOTS-c can activate key pathways such as AMPK (AMP-activated protein kinase), often referred to as a master regulator of metabolism, which helps improve energy efficiency, increase physical endurance, and support mitochondrial function; additionally, MOTS-c has demonstrated potential benefits in promoting exercise capacity, reducing age-related metabolic decline, and improving overall cellular resilience, positioning it as a promising target in the field of longevity science and performance optimization; as interest in mitochondrial health continues to expand, MOTS-c is increasingly recognized as a next-generation peptide that bridges the gap between metabolism, aging, and cellular adaptation.