The single simple rule for losing weight is to eat less. It is better for you while doing so to switch to more healthful foods. But even if you have the worst diet in the world, if you eat less of it, you will lose weight.
HI,
How are you? With healthy diet and exercise, some say that it is possible to shed 3 or more pounds a week. Diet with low starches, added sugars, and animal fat from meat and dairy foods may help as well as burning more calories than you can eat may help. However, losing the exact 6 kilogram may entail analysis of your calorie intake, how fast your metabolism is, your diet and your overall health. It is best that you check with your doctor or be referred to a nutritionist for proper evaluation. Take care and regards.