The increase in the content of lipoprotein in the blood will increase the body's ability to prevent excessive absorption of cholesterol, thereby reducing the cholesterol in the blood. Some people can significantly increase the content of high-concentration lipoprotein in the blood through regular physical exercise and weight loss. Can we know from this? ['Physical exercise and weight loss are the most effective ways to lower high cholesterol in the blood.', 'Some people lower blood cholesterol by regular physical exercise and weight loss.', 'People of standard weight need only regular physical exercise to lower cholesterol in the blood.', 'People who do not exercise regularly, especially fat people, have an increased risk of cholesterol in their blood as they get older.']