Haha, I'm coming. I used to be a chubby girl, but now I'm a skinny girl. Your goal is 25 kg, about 12 kg, for three months. Lose an average of 4KG per month. You stay in the gym for five hours every day. The goal can be achieved. First of all, I want to tell you that 20-year-old skin is very elastic. If you do aerobic exercise, your skin will open and your cells will breathe freely. Aerobic exercise can improve people's mental state. In this state, the human immune system works well, what's more, you are thin and can recover quickly if you break a hole. As long as you keep exercising, sweating, taking a bath after exercise and supplementing minerals and vitamins every day, your skin will not wrinkle or relax. Secondly, you should exercise your whole body, not just your muscles. If you have the opportunity to swim, dance and ride a bike, otherwise you will do the same category for three months, and your interest will be greatly reduced, as long as you can form the exercise habit. Finally, the killer to keep skin shiny and elastic is collagen. Collagen exists in pig's trotters, chicken feet and pigskin. You should eat more of these three things, which are cheap, hygienic and safe. Don't buy medicine or health products to eat. Come on! Haha, I danced and jumped out ~ and ate pig's feet ~ ~