1 Physical activity can boost your HDL level. 2  Get at least 30 minutes a day of moderate activity, most days of the week. 3  Lose extra weight. 4  If you're overweight, losing extra pounds can help raise your HDL levels, as well as cut your LDL (bad) cholesterol levels.5  Choose better fats. Physical activity can boost your HDL level. 2  Get at least 30 minutes a day of moderate activity, most days of the week. 3  Lose extra weight. 4  If you're overweight, losing extra pounds can help raise your HDL levels, as well as cut your LDL (bad) cholesterol levels. 5  Choose better fats.