There are many things which can have a direct effect on your weight such as excess food, calorie laden eatables and drinks, sedentary lifestyle, depression, lack of sleep etc. Out of these there are some which are directly proportional to your weight which means that with the increase in the factors, an increase in weight noticed. Likewise, there are some factors which are inversely proportional to your weight. This implies that with the increase in those factors there is a decrease in weight noticed. However, being underweight or overweight can both be equally harmful for you and your health. Get an answer to “How much should I weigh” from a physician, health expert, fitness trainer or any knowledgeable person. Then start working on reaching your desired weight. It might not be an easy task because it might demand some changes in your lifestyle too but be firm in your approach and goal.