Celine Dion provided an emotional update about her battle with stiff-person-syndrome, explaining what it feels like to live with the condition. The 56-year-old Grammy winner spoke candidly with Hoda Kotb during an NBC News Exclusive clip that aired June 7 and admitted that the debilitating muscle spasms associated with this disease caused her to suffer from broken bones. “It’s like somebody is strangling you,” Dion told Kotb in a preview clip of the upcoming show airing June 7. “It’s like somebody is pushing your larynx/pharynx,” she said, as she demonstrated the high-pitched voice that result…