A sedentary lifestyle significantly impacts metabolic health by increasing the risk of obesity, cardiovascular disease, and type 2 diabetes. Lack of physical activity can lead to poor insulin sensitivity, resulting in elevated blood sugar levels. Hormonal changes, such as increasing levels of cortisol, can further exacerbate these issues. Additionally, a sedentary lifestyle reduces muscle mass and overall metabolic rate, contributing to unhealthy weight gain. Engaging in regular physical activity is essential for maintaining a healthy metabolism and improving overall health.