Cancer and the treatments to fight it can zap a person's physical and emotional energy.

So one California oncology nurse decided to offer patients an exercise class designed specifically for them.

For Cynthia Cotton, this class offers more than group exercise. It's a lifeline. One she desperately needed when she learned she had breast cancer.

Weak from chemo, she dragged herself into "exercise for energy" at the Camino Medical Group in Mountain View.

The training helped her build muscle strength. Her classmates helped strengthen her spirit. They're all cancer survivors.

The class focuses on celebrating life. You won't hear the "c" word here, and the exercises make treatment more bearable.

When Donna Shuster of Cupertino was diagnosed with ovarian cancer she found this class offered the benefits of group therapy without the traditional sessions.

She enjoys the workout, but it's not why she's here.

Breast cancer, ovarian cancer, colon cancer... patients at every stage of treatment are united by a common fight.

It's a place to laugh, dance and meditate, but most important: connect.

Cynthia Cotton is stronger than ever and now returns to the class to support the women she says saved her.

It's a room filled with hope, energy, laughter... a sisterhood of survivors.