In my opinion, there are three criteria that must be met for one to be deemed a fitness expert. 1.) a strong professional background and education within the area of Exercise Science or closely related field, 2.) a nationally accredited certification, and 3.) adequate personal experience practicing what you preach. I understand that accomplishing all three of these aspects can be difficult especially when considering where you currently are in life. However, one needs to meet a minimum of two of the criteria to even consider the designation.