Genetics play a significant role in determining fitness and health outcomes. Genetic predispositions can influence various factors, including muscle composition, metabolism, and response to exercise. For example, some individuals may naturally possess a higher percentage of fast-twitch muscle fibers, enabling quicker response to strength training. Additionally, genetics can affect susceptibility to certain health conditions, shaping fitness needs. While genes establish a baseline, lifestyle choices such as diet and physical activity can modify these outcomes, highlighting the importance of a holistic approach to wellness.