Exercise will only keep you young. I have never heard that collagen will be lost, and it will be lost badly after the age of 25. So the sooner you supplement collagen, the better. It is suggested that 4~8g pure fish skin collagen powder should be supplemented every day if possible. Imported collagen powder is the best, and there is no additive and no pollution. Luo Sailuo is the best source of collagen in the world. If you want to absorb collagen, you'd better use it and buy it. I am a food major, and the teacher also said before class that collagen drinks and some drinks containing additives have little collagen content, and the additives in them are likely to have side effects on the body. In order to really play the role of skin care and health care, it is recommended to buy pure fish skin collagen powder.