Which of the following diseases does regular exercise correct?

Regular exercise can help correct obesity. Obesity is a medical condition characterized by excess body fat that can lead to various health problems. Regular exercise helps to increase metabolism, burn calories, and reduce body fat, which can help to improve an individual's overall health and reduce the risk of developing obesity-related health problems, such as diabetes, heart disease, and high blood pressure. However, regular exercise does not correct goiter, kwashiorkor, or pellagra. Goiter is a condition caused by an enlarged thyroid gland, kwashiorkor is a severe protein deficiency, and pellagra is a disease caused by a deficiency in niacin. While exercise is important for overall health, these conditions require specific medical treatment to be corrected.