How long it takes to see the effect of fitness weight loss depends on the person, depending on the intensity of exercise, exercise, diet control and personal fitness, usually 2-4 weeks of standard exercise can have significant results. Fitness weight loss is the process of converting fat into muscle and reducing the build-up. Different forms of exercise have different effects, aerobic can exercise lung capacity, anaerobic exercise helps to shape, and each exercise should be more than half an hour to burn fat. If after a lot of exercise, do not pay attention to control the diet, overeating, eating too much calorie food, when the food calories are much greater than the calories consumed by exercise, will still cause fat accumulation, not weight loss effect. The same exercise, different physical people will have different effect time. Fitness weight loss should be adhered to in the long term, choose the right exercise method for yourself, ensure the intensity of the exercise, during the need for a light diet, balanced nutrition, do not eat excessive greasy, high-calorie food, do not overeat.