Brisk walking for people who do not exercise often, generally need to walk briskly for at least 30 minutes to burn fat, within 30 minutes burning is sugar, is the calories supplied by glycogen, after 30 minutes is the calories supplied by fat. If you want to lose weight by brisk walking, you must pay attention to your diet and control your daily caloric intake, only if the daily consumption of calories is greater than the intake of calories, you can achieve the effect of weight loss. Newcomers are recommended to exercise 3 to 5 times a week is appropriate, gradual and measured.