Insulin sensitivity plays a significant role in fitness by determining how effectively the body utilizes glucose. Higher insulin sensitivity means that the body can manage blood sugar levels better and utilize carbohydrates for energy during physical activity. This leads to improved exercise performance and efficient recovery. Regular physical activity, particularly strength training and cardiovascular exercise, can enhance insulin sensitivity over time. Improved insulin sensitivity can also reduce the risk of developing metabolic disorders, making it a critical component of both fitness and overall health management.