GAIN Weight
Weight gain is an increase in body weight. While most people struggle to lose weight, there are those out there who are trying to gain weight. It can be either an increase in muscle mass, fat deposits, or excess fluids such as water.
There are several ways that can be used(for best results in unity) in order to gain the desired weight. Take a look at the mini-sections and you WILL 100% find the answer you are looking for.