Core Viewpoint - The article emphasizes that high-calorie foods do not effectively warm the body and can lead to weight gain. Instead, it suggests that certain types of foods, particularly those high in protein and specific nutrients, are more effective for warming the body during cold weather [1]. Group 1: Food Types for Warming the Body - High-calorie foods, particularly those high in sugars and fats, are less effective for warming the body compared to low-fat, high-protein foods like lean meats and eggs [2]. - Red meats, such as beef and lamb, provide heme iron, which can help increase hemoglobin levels and alleviate cold sensitivity in individuals with anemia or low blood pressure [2]. - Foods that are warm in temperature are more effective for warming the body, as cold foods can slow digestion and reduce energy conversion efficiency [3]. Group 2: Nutritional Components - Foods rich in iodine, such as seaweed and fish, are important for synthesizing thyroid hormones that regulate metabolism and enhance cold resistance [4]. - Dairy products, particularly warm milk and yogurt, can help with cold resistance by providing calcium, which is essential for maintaining metabolic heat production [5]. - Adding spices like pepper, ginger, and garlic to meals can improve digestion and blood circulation, thereby enhancing the body's heat production and dissipation [6]. Group 3: Common Misconceptions - The belief that alcohol warms the body is misleading; while it may temporarily increase blood circulation, it ultimately leads to a feeling of coldness once the effects wear off [8]. - Consuming thick meat soups is not as effective for warming the body due to their high fat content, which slows digestion and diverts blood flow to the digestive system [9]. - Eating excessively hot foods can cause harm, as temperatures above 65°C are classified as potential carcinogens, and can lead to esophageal injuries [10].

Core Viewpoint - Winter weight loss is particularly challenging due to physiological changes, seasonal activity reductions, dietary shifts, and psychological effects related to clothing [2][10]. Group 1: Physiological and Behavioral Challenges - Seasonal metabolic changes lead to a slight decrease in basal metabolic rate as the body enters "energy-saving mode" to cope with cold temperatures [2]. - Reduced outdoor activities during winter result in significant decreases in daily energy expenditure, compounded by lower exercise intensity due to heavy clothing [2]. - Increased availability of high-calorie foods during winter festivities and a natural increase in appetite for energy-dense foods contribute to weight gain [2]. Group 2: Nutritional Strategies - Optimizing the ratio of macronutrients is crucial for weight loss, with protein making up 15%-20%, carbohydrates 50%-60%, and fats 20%-30% of daily energy intake [3][4][5]. - Emphasis on high-fiber whole grains and healthy fats from sources like nuts and olive oil is recommended to enhance weight loss effectiveness [4][5]. Group 3: Hydration and Sleep - Adequate hydration is essential, with a recommendation of 1.5-1.7 liters of water daily to enhance satiety and metabolic function [6][7]. - Sufficient sleep, averaging around 7 hours per night, is necessary to regulate hunger hormones and reduce cravings for high-energy foods [7]. Group 4: Exercise Adjustments - Physical activity accounts for 15%-30% of total energy expenditure, making it vital to incorporate resistance training and high-intensity interval training to boost metabolism [8][9]. - Creating more opportunities for daily movement, such as household chores and taking stairs, can help counteract winter lethargy [9]. Group 5: Psychological Factors - Accepting minor fluctuations in weight during winter is normal, with a typical decrease of 0.1-0.2 kg per week being expected [10]. - Monitoring various indicators beyond weight, such as waist circumference and fitness levels, can provide motivation and a more comprehensive view of progress [10]. - Setting achievable process-oriented goals, like completing a certain number of workouts per week, can enhance motivation and success in weight management [10].