Diana Walton had always been the picture of health.  So, when she was told she had stage four breast cancer, she was shocked.

"Me?  I mean, I'm healthy.  I eat healthy; I work out everyday," said Walton.  "This doesn't run in my family.  How did I get cancer?"

The cancer had already attacked lymph nodes in her right arm by the time she was diagnosed in 2009.

"I had a lot of pain.  I was lifting weights at one time and I had a lot of pain under my arm," said Walton.  "I knew I had severe cancer when the doctor who gave me the diagnosis was crying."

Walton was 37 at the time, and as a wife and mother of two teenage boys, she went into warrior mode.

"God only gives this to warriors and that's what I consider myself.  A warrior," said Walton.  "I took it; I ran with it.  And there's nothing but blessings that have come with this."

A mastectomy followed by aggressive chemotherapy left her with no hair.  But, that didn't take away her pride and spirit.

"Oh yes, when I met her she had no hair," said Peri Faulks, Walton's friend and co-instructor.  "And all I could think was wow -- this woman has spunk."

Her spunk is what made her a popular Zumba instructor.  Walton teaches about 15 classes a week and her students affectionately call themselves her "fans."

"Whatever we may go through, it's nothing compared to what she's been through," said Faulks.  "And so it's a blessing to have her around."