Melissa Peterman lost weight from eating a diet that was high in protein and low in fats, sugar, and carbs. She also did a lot of exercising and had a personal trainer. She is known for starring in the TV series named Reba from 2001 to 2007.
1 Additional Answer
According to Melissa Peterman herself, she got 'serious' about her diet and excercise. She decided to change her diet to more proteins and less carbs and hired a personal trainer.