<unk>  is manual activity that develops or maintains<unk>  fitness and overall health. It is often practiced to strengthen muscles and the cardiovascular system, and to hone athletic skills. Frequent and regular<unk>  boosts the immune system, and helps prevent   diseases of affluence such as heart disease, cardiovascular disease, Type 2 diabetes and obesity. It is also improves mental health and helps prevent depression.
Physical exercise
Aerobic exercise
Shift work
Kegel exercise
Anti-obesity medication
Walking
Dieting
Diet 