Exercise is medicine because it can lower blood lipid levels, triglycerides, cholesterol, blood sugar and blood pressure. It can raise HDL and lower LDL. It can make the heart a more effective pump. It can help us retain or develop muscle mass as we age, and increase bone density. It can relieve arthritic pain and decrease lower back pain. It can give us increased energy and help us sleep better. It also has a positive effect on our emotional management of stress.
Exercise is preventative and can also be a treatment. When used in the proper dose exercise can do wonders to improve quality of life and longevity, all naturally.