New Year, New You in 2016

Real-Life Weight-Loss Success

These real people shed hundreds of pounds with diet, exercise and perseverance. See how they did it!

THEN: 288 lbs.

"I was a secret eater with no sense of portion control," Donahoo, 27, tells PEOPLE. "If someone brought cake or cookies to the office, I’d take the same amount as everyone else, but I’d go back throughout the day and just scarf a bunch of it down. I knew I was overeating but I didn’t want anyone to judge me for it."