Intense physical exercise is not the only way to better health. Studies show that walking several times a week can lower the risk of many diseases. They include heart disease, stroke, diabetes, bone loss, arthritis (关节炎), and depression. Walking also can help you lose weight.
Fast walking is good for the heart. It lowers the blood pressure. It raises the amount of good cholesterol(胆固醇) in the blood. Researchers say walking can sharply reduce the risk of suffering a heart attack.
