It’s a simple answer to a complicated question, but it works for Zion Clark. Born with no legs, how would Clark live, let alone thrive, when the odds seemingly were so stacked against him? Clark has the answer tattooed on his back, stretching from one shoulder blade to the other—“No Excuses.” “Got it in high school, it was influenced by my wrestling coach (Gil Donahue) and it’s a mentality I live by,” Clark said. “We all go through things in life, we all have a story to share but we can’t live by our excuses. You have to go out there and make the most of what you can and I think I am an example of that.” Clark, who lives in the Little Italy section of San Diego, is 24 now and is a success by any measure. He’s an author, a world record holder, a motivational speaker, the …