Rosi Christensen lost more than 100 pounds over the last year, but really, she's gained so much more.She had a gastric bypass procedure done through Emerson Hospital's Surgical Weight Loss Program eight months ago.Rosi got to a point where she was concerned not only about her health, but her life.She was taking heart medication and had sleep apnea and acid reflux."I just remember at nighttime just getting pretty scared," she said. "What if I don't wake up? I just remember telling myself, 'That's it. I can't do this to myself, I can't let this keep going.'"What's even more incredible is that her husband, Jeff, hasn't seen her since losing more than half of her body weight.Watch the video above to learn more about Rosi's weight loss journey.