Genetics are accountable for each person's stature, muscle fibers. and how well the body responds to different kinds of training. A lot of hard work, a specific diet, and smart training is of course an important factor in how much muscle a person gains as well. However, in response to training each person's body can react differently and genetics can provide an explanation for these differences. This is why it is important for a person to dedicate themselves if they are aspiring to make changes to their body. A lot of trial and error and learning is incorporated into training due to the fact that every person must train differently. Results seen in the gym have a correlation to the efficacy of satellite cell-mediated myonuclear cells (Conteras, 2011). Mechanogowth factor, Myogenin, and IGF-IEa are indicator genes that effect the way muscles respond as well (Conteras, 2011).