Getting exercise will help you lose weight faster but if you want to lose 20 pounds in a month without exercising then it's possible.
You'll just need to cut down on your calorie intake when eating meals.
You can also lose weight by taking 1 to 2 tablespoons of apple cider vinegar per day and you should take the apple cider vinegar before each meal.
The apple cider vinegar helps to reduce your body fat percentage and lower your bloods triglycerides.