LeAnn Rimes documented a wellness treatment that has helped clear her body of "micro-toxins" after past health struggles. "Listening to my body and choosing what feels supportive for this season of healing, especially after a very busy year of filming and touring," Rimes, 43, wrote in a recent Instagram post after undergoing a "plasma exchange" at Next Health in Nashville. "I demand so much from my body and it's incredibly important to me to take the best care of it I possibly can.