There are plenty of women who have flabby arms and are looking for a solution.This occurs because women tend to store more fat on their arms as compared to men. Flabby arms are caused due to two main reasons. One, our skin tends to lose its elasticity as we age, which means it stretches and tends to sag. The other reason, as mentioned earlier, is excess fat located in the rear of your arm. This can affect your confidence and create a negative body image.