I won't lie to you. I once lost 20 A Jin months. The most important thing is to suffer! I eat three meals a day when I lose weight. Have a big breakfast. Eat 60% full at noon (I still want to eat when I leave the table) and eat an apple and drink a glass of freshly squeezed juice at night. Run 2000 meters at a speed of 8 kilometers per hour every day. Then do 100 sit-ups and divide them into 5 groups. Then practice strength properly. Rest for 6 minutes after practice. Run 4000 meters at the same speed as before. Drink a glass of skim milk before going to bed at night. It will take effect in a week (about 7 pounds less). You can definitely lose 20 pounds in 50 days. As for food, don't eat anything sweet and greasy. I don't want to say more. You should know for yourself.