It's easiest to separate legs, warm up (you must warm up first, or you will strain your ligament), and then leg press, I can't tell you the leg position here. See if it's online. Don't ask me again. The front leg, the side leg and the rear leg are all crushed, and then you fork. If you can't get down, you can hold it by hand. Stick to it every day, and it will be almost effective in two months. It should be no problem. My classmate can get off at the age of 20. Come on!