haha~ No, don't worry, I eat this way too.

During the process of metabolism, the human body converts nutrients from the external environment into its own components and stores energy, which is called assimilation (or synthesis metabolism).At the same time, the body breaks down some of its substances to release energy and expel metabolic byproducts, a process known as catabolism (or catabolism).If assimilation exceeds catabolism, one's weight will increase.Some people naturally have strong assimilation but weak catabolism, making it easy for them to gain weight.

Additionally, those who are said to 'gain weight even from drinking cold water' can be classified as obese individuals.bloodplasma lipids (including triglycerides, cholesterol, free fatty acids, etc.) content is significantly increased, indicating metabolic disorders of lipids in the body. This explains why some people gain weight despite consuming little food.

Another situation is that some people who eat less fat are still very overweight, while others who consume more fat remain thin.The main reason for this is: large consumption of fatty foods often leads to a feeling of fullness, reducing the intake of staple foods. After eating less fat or meat, the stomach feels empty, leading to increased consumption of starches or sugars. The excess starches and sugars in the body can convert into fats stored under the skin, causing weight gain.When essential fatty acids are insufficient, the body rapidly converts sugar into fat. This rapid conversion causes a quick drop in blood glucose levels, making one feel hungry again, leading to overeating and subsequent weight gain.