For as long as he can remember, 31-year-old Ryan of Lilbourn, MO, struggled with his weight.
"The rest of it came after college," he said, adding he eventually got to 550 lbs.
Ryan's struggle with his weight came to a head in October 2012, when his twin brother -- who was also the same weight -- came down with congestive heart failure.
"It was kind of a wakeup call me," Ryan said, "that I needed to get my life in order."
Ryan subsequently signed up for a program that concentrates on portion control and exercise. The results were stunning; in a year and a half, he lost 350 lbs.
"It worked," he said. "It makes sense. Calories in vs. calories out -- you're going to lose weight."
Now, Ryan -- who is a band teacher at a local high school -- is showing off his stunning weight-loss to Rachael Ray and her co-host, Bob Harper.
Check out the incredible results by watching these exclusive videos.