Probably because I haven't trained for a long time. I used to be a sports student, and my physical fitness was good. Because there is plenty of time in college, I don't exercise much, and I have declined in many aspects. I also often play basketball, but playing basketball has no training effect on my physical fitness. I have my own exercise, and you want to lose weight on my legs. I suggest you try several methods. Cycling for a long time is a good exercise for my legs. You can lift barbells if you can.