Brittany Cartwright has a mantra while she's on the treadmill, and it goes like this: "Wedding, wedding, wedding." She and fiancé Jax Taylor have been so committed to living a healthy lifestyle as of late: Jax lost 42 pounds and Brittany lost 25 pounds after getting into fitness and clean eating. Brittany even recently shared a super hot swimsuit snap, saying "I am proud of how much weight I have lost and how healthy and happy I feel!"

Brittany's been documenting her time in the gym too, so we know exactly how the Vanderpump Rules couple is getting ready for the big day. Besides treadmill sessions, Brittany and Jax are back at it with workouts at the LIT Method. That's the low-impact studio beloved by the Vanderpump Rules crew for its toning with resistance bands and your own body weight. 

Photos: @Brittany/Instagram Stories

"Vacation is over and it's time to get back to wedding mode," Brittany wrote on Instagram Stories yesterday. "Back to dieting and Lit Method." These two are putting in the work as the wedding day countdown is on.