Stress and anxiety can have detrimental effects on physical performance. High levels of stress activate the body's fight-or-flight response, which can lead to increased heart rate and tension, impairing coordination and endurance. Mental distractions can reduce focus and motivation during workouts, resulting in suboptimal performance. Furthermore, chronic stress can contribute to fatigue and hinder recovery. Managing stress through techniques like mindfulness, deep breathing, or physical activity can help improve performance and overall well-being.