I decided to look up the definition of athlete. Dictionary.com defines athlete as
"a person trained or gifted in exercises or contests involving physical agility, stamina, or strength; a participant in a sport, exercise, or game requiring physical skill."
Dissecting this definition, being an athlete is much more than being a jock and playing sports. I am a participant in exercise. Although I don't have much strength, stamina, I do have skills for physical activity. My goals may be different than someone participating in sports, but in the end I do the best I can for my own reasons. I may not be competitive or push myself beyond my own boundaries, but in my own way, for my own reasons, yes, I do believe I am an athlete.