Weight and level of physical keto bhb activity and you will be given the exact figure. So if your maintenance calorie needs is 2000 calories per day, then by eating less than these calories per day-1800, 1500 or 1200 calories per day-- you will logically lose weight. Add some exercise and you will lose more. Here's an important fact: It is not safe to shave off more than 15% of your maintenance calorie needs. For a 2000-calorie maintenance number one keto need, go for no more than..