Physical exercise is any human activity that enhances or maintains physical fitness with the goal of improving , overall health and wellness.

Exercise is performed for various reasons, including increasing growth and development (bodybuilding), managing aging to reduce morbidity, strengthening muscles, improving the function and endurance of the cardiovascular system, optimizing athletic skills, improving body composition, weight loss or maintenance, emotional health, relaxation, meditation, and enjoyment.

Frequent and regular physical exercise boosts the immune system and helps prevent “diseases of affluence” such as cardiovascular disease, type 2 diabetes, metabolic syndrome, and obesity.