Let your upper body lie on the bed with your legs straight against the wall. It looks like your body is 90 degrees. You can stop playing with your mobile phone or close your eyes. It lasts about half an hour. This is the method that my roommate has been practicing.
Running, running is really skinny. I tried this, but running for a long time will make my legs hard. Because of the muscles, if you don't want to be hard, you must massage your calves after running. I suggest running at a constant speed. After running, you should press the leg muscles more, and with Yu Xiu, you can accelerate fat consumption and make your legs thinner.
Kick, kick back and forth more often when you are free, because stretching can make your legs slender and naturally look thinner.
When you are free, don't sit still, walk more and climb more stairs. The effect may not be so fast, but it will be effective after a long time.