If the legs are thin, you can put a cushion under the air bike for at least half an hour at a time, which will give your legs more room to move. If you want to get the result faster, you can spend an hour. I've lost 5 centimeters every day for half a week.

Abdominal sit-ups. Really gray often works, not only the abdomen is thin, but also the whole upper body will be thin ~ ~

Arm, I heard that mineral water can also be mentioned. Sorry, I have no experience in this field. .