After four 'boot camp' style sessions the number of enrolments has quadrupled from four people to 16, she said.
"I originally wanted to join a gym but I got bombarded with messages on Facebook to start my own exercise programme," she said.
The one-hour sessions consist of jogging around a field, or up steps, and repetitive press ups, squats and arm dips.
"Some of us have crawled back to our cars afterwards and there's even been people vomiting but everyone who has joined wants to succeed.
"I'm not skinny or slim but I've had a three-year gym membership and have been less than 12 times in that period."
Personal trainer Katrina Heywood agreed to help the group with training exercises using her Territorial Army experience.
"People get more motivated if they are exercising with a group than on their own when it is easy to slacken off," she said.
"It's surprising how unfit people get - most join to get healthier and fitter, not necessarily to lose weight - after a few weeks they notice the difference."
Gold's Gym manager Steve Gardiner said people fall off the fitness bandwagon pretty quickly after the New Year.
Both Anytime Fitness and Gold's Gym have launched fitness and weight loss programmes.
"It's to give residents a second chance at their New Year's resolution," Mr Gardiner said.
"We're doing this to see just how many folks have the courage of their convictions."