Reduced body fat

Body-fat reduction may be supported by cold exposure, exercise, local heat therapy, and eating patterns that improve metabolic flexibility.

• Cold exposure: In a study of men, eight weeks of deliberate cold exposure was associated with an average 5.5% reduction in abdominal fat and reduced waist circumference. Cold can also increase energy expenditure by activating brown fat and promoting the conversion of white fat into more metabolically active beige or brown fat. 1 2
• High-intensity training: High-intensity interval training can support fat loss as part of exercise and dietary changes; combining it with endurance or lower-intensity exercise is discussed as a way to build fitness-related adaptations. 3 4
• Local hyperthermia: A study using local skin heating to about 41°C found evidence of white-fat browning and metabolic changes. The approach was not shown to produce spot reduction, and the discussion cautions against heating skin to the point of injury. 5 6
• Eating patterns: Compressing eating into a moderate daytime window, in line with the body's daily rhythm, was described as potentially beneficial for metabolic health. 7