Drinking porridge at night may not cause weight gain. Attention should be paid to calorie intake, and physical activity is also necessary. Porridge, mainly made from rice and millet, is a low-calorie food that is easily digested and absorbed by the gastrointestinal tract. Consuming porridge does not lead to a continuous increase in calories in the body and generally does not cause obesity. Due to its low calorie content, drinking a large amount of porridge does not result in an abnormal increase in calories, and the probability of weight gain is relatively low. However, it is important to avoid foods with excessive fat content, such as fatty meat, fried chicken, and fries, as these foods may increase calorie intake and lead to obesity. Obesity may affect the body's metabolism and make daily activities difficult. Proper weight loss measures can be taken, which includes not only adjusting the diet but also engaging in outdoor physical activities such as jogging, swimming, sit-ups, and cycling. These exercises can promote calorie consumption and accelerate fat burning. If obesity is severe, timely treatment at a formal hospital is necessary. During treatment, it is important to relax and avoid negative emotions such as inferiority and anxiety.