While Kirstie was losing weight, she worked out so much that she decided to turn her living room into her gym. "Then, I had all my equipment moved out about a year and a half ago, and I haven't worked out since," she says. "Big mistake."

Kirstie's bringing her workout machines back into the house, but she says the decision wasn't easy. "Deciding whether you're really going to do it again or not, there's a lot of pressure," she says.

Watch Kirstie recreate her workout room