Well that was quick...
Ronnie Ortiz-Magro had a lot of problems during his stint on the hit MTV show Jersey Shore, but being in bad shape was never one of them, until recently when he let himself go.
Now, in just four weeks, the 28-year-old is already showing off his rock hard abs in an impressive instagram snap.
The image has two side-by-side photos of Ronnie, one of which is from week one before he began his new training regime, and the other showing the results after four weeks.
Ronnie Ortiz-Magro looks fantastic in just four weeks (Instagram)
The week one image shows Ronnie displaying a potbelly as he poses in the mirror topless. The week four photo is the complete opposite as his body now looks like the Ronnie everyone remembers from Jersey Shore, which is an incredibly fit looking Ronnie.
The reality TV star had suffered from kidney stones back in April 2013, and was hospitalized because of it. Ronnie admitted that this incident is what led him to let himself go.
"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," he wrote along with the photo. Ronnie was able to achieve the impressive results through strict diet and exercise.