Boys have thick legs, maybe they are fat. Try to change the sitting position. Correct sitting posture can greatly reduce the pressure on the thighs, thus alleviating. Nowadays people often lose weight by running, but if you want to slim your thighs, you should jog and do aerobic breathing. You can jog for 20 minutes and then walk slowly for a while. After that, press leg press to relax and prevent fat from turning into muscle.
In addition, you can also pedal your bike in the air before going to bed, which can also effectively thin your thighs. We should have good living habits, go to bed early and get up early. You can also drink a glass of lemonade in the morning to relieve constipation and detoxify, and you can also consume excess fat.
You can go out for a walk at ordinary times instead of staying indoors all the time. If you are in a hurry, you can exercise yourself effectively by giving up the elevator and climbing the stairs instead.
Then there is another method, stretching exercise, where two hips droop, one leg kneels, the back stays straight, and the other leg stretches back parallel to the ground. Or in the same posture, straighten the other leg to the side until it forms a 90-degree angle with the body. Try to do this exercise in three groups (each group 10 times) on each leg.