That depends on your starting weight. If it's 20 1 kg a month, it's fine. If it is less than 150 kg a month, it is not good to exercise without controlling diet. You can eat whole wheat bread for breakfast, drink a glass of milk at 7 noon, and don't eat tomatoes, cucumbers and rice at night. Ten kilograms a month is no problem. I lost ten pounds in half a month. I hope it helps you.