Sedentary behavior negatively impacts metabolism by slowing down the body's overall energy expenditure. When individuals remain inactive for long periods, their muscle mass can decrease, leading to lower metabolic rates. Additionally, prolonged sitting is associated with insulin resistance, which can increase the risk of type 2 diabetes and other metabolic disorders. Furthermore, reduced physical activity diminishes the body's ability to process and utilize glucose effectively. Reducing sedentary time and integrating physical movement into daily routines can help mitigate these adverse metabolic effects.