The reason why chefs get fat is generally because they inhale too much oil smoke when cooking. Even if you don't eat much and stand for a long time, you can't get rid of the smell of cigarettes every day. Smoking such lampblack will naturally make you fat. There is no doubt about it.

If you want to lose weight, it is impossible to tell the chef to stay away from the lampblack. So get some measures to prevent oil smoke inhalation, and eat some plantain shells to scrape oil.