And his hard work has totally paid off.
“I’m really proud of my stomach,” he told the Daily Mail. “My belly used to be a real beer gut but it’s going down and even my waist is slimming down too.”
It's the difference between looking like a dad and a son," he continued.
“I get told I look 15 to 20 years younger. When you see the results, you get so much more motivation week by week when looking in the mirror. It’s made me want to continue to try harder.
“My transformation happened so fast because I did the workout program every day without any time off, which helped cut the fat so quickly.”
It's not easy to maintain the motivation to do the work.
So Peterson is using his Instagram account to document his journey and hopefully be an inspiration to others who are looking to make a change.
"Each day that we are not living to our fullest potential is a waste of the precious time that we are allotted," Peterson wrote on his Instagram.
“Having three children and a wife who I want to be around as long as I can made me all the more determined,” he said.
Of his weight loss, Peterson said, “It transforms not only your physical self but the way you think and feel as well as the future you want for your family. I know if I can do it anyone can.”