In fact, this kind of elastic pants is inhuman to girls and women, harmful to blood circulation and metabolism, and harmful to health, including bras!
You have an independent personality. If you don't like being uncomfortable, you have to listen to your sick mother. This is a sign of no self-esteem and independent thinking. It is really unacceptable and extremely harmful to personal growth, personality formation, physical and mental health and lifelong development. We must try to correct our mistakes.
Of course, if your parents' ideas are conducive to your growth and physical and mental health, you still have to listen to your parents. Living in harmony with parents is conducive to love and positive energy. What we need is aerobic fitness and health care, not clothes, food and articles that affect health. We must resolutely oppose and resist!