Ronnie Magro Weight Gain And Weight Loss: 'Jersey Shore' Star Reveals Before And After Photos

Ronnie Magro recently showed off a substantial weight gain -- and weight loss.

In a set of photos posted to the former Jersey Shore star's Instagram account, Magro has revealed his recent weight gain, as well as the results of four-weeks of hardcore training.

"I really let myself go after I got sick last year. It's been a long road. I am nowhere I want to be shape wise, but I feel better than I ever did," Magro wrote on Instagram with the before and after photos of his weight loss, adding several hash tags, including "#DietingIsKEY," "#CardioSavedMyGoodYearTire," and "#TransformationThursday."

According to a May 29 report by Too Fab, Magro "put on some extra weight" last year, but has been spending a lot of time in the gym in the last month -- which is evident from his before and after photos. While Magro is looking a bit beefier than fans are used to seeing him in the photo on the left, he looks to be nearly back to his Jersey Shore-self in the photo on the right.

After starring on Jersey Shore for four years and six seasons as the show's resident "meathead," Magro went on to appear in 2012's The Three Stooges, along with his co-stars, Nicole "Snooki" Polizzi, Jenni "JWoww" Farley, Mike "The Situation" Sorrentino and Sammi "Sweetheart" Giancola.

As for his relationship with Giancola, which was often a main storyline on Jersey Shore, Magro appears to still be committed. Following the show, Magro and Giancola moved into their own home outside of New York City and were last photographed together at a wedding earlier this month.