"Some of them have started their treatment, some of them are in the midst of their treatment and some of them are moving beyond cancer," said Weathers-Cox.
Janni Buaiz, who is a cancer wellness navigator, says the program is based on four pillars: body weight, nutrition, exercise and lifestyle, incorporating the use of gratitude globes to help calm and center the nervous system.
"They learn cancer prevention. They learn how to live a well life -- bridge the gap between the clinical, and now they're an open canvas. 'What now? how do I go on?'" said Buaiz.
Of course there is physical exercise -- that's what this is all about -- but most of the women will tell you it's really emotional.
"I've survived four surgeries, cancer surgeries. This hospital means a lot to me," said Melissa McFedries, of Tustin.
"I love it. It's been my lifeline, even on days I don't feel like coming, I feel so good," said Sandra Potts from Fullerton.
Singing, clapping, smiling and loving are all a part of this workout.
"That class is a vent. It is meant to evoke emotion, get it out, express joy, laughter because a lot of our participants are coming in here and they're on a journey that's really difficult," said Weathers-Cox.
St. Joseph Cancer Treatment Center also offers yoga, pilates, circuit training and one-on-one workouts that are free to those receiving treatment.