A User's Guide Exercise is good for health. It prolongs life, largely by reducing the risk of heart disease. It lowers blood pressure, improves cholesterol, and fights diabetes and obesity.
Regular exercise reduces the risk of colon cancer and helps combat anxiety and depression.
Serious medical consequences such as heart problems are infrequent, but musculoskeletal injuries are quite common. Fortunately, many are minor difficulties that you can treat yourself. And even if you have a more serious injury, you should be able to handle it properly until professional help is available. Then hunter-gatherers learned to cultivate crops and domesticate animals. Over the millennia, cultural norms, commercial imperatives, and personal tastes determined how men chose their foods.