In order to get a bigger butt, you should read this article very carefully. Muscle genetics ? If you have low muscle genetics, it is very easy to overtain your muscles. If you overtrain your muscles, or if you pay no attention to nutrition whatsoever, you might be causing your muscles, and therefore you bum, to get even smaller. This is known as the catabolic state. It's a state that your body enters during or right after exercise. If your workout takes long enough for your body to run out of energy, you'll enter the catabolic state and your body will begin to break down muscle tissue in order to make up for this lack of energy. If you're trying to lose weight, this wouldn't be much a problem, since you'll burn a lot of fat in this state as well. However, if your goal is to gain a bigger bum, you wouldn't want this. After all, we want our bodies to gain weight. Now, ectomorphs who have trouble gaining weight or trying to achieve a curvy figure don'...