Rob Kardashian's decision to ditch Kim Kardashian's wedding was initially attributed to concerns about his weight, although recent Facebook rumors suggest that there is far more family drama playing. Regardless of reason for his hasty retreat, the Keeping Up With The Kardashians star continues to be spending so much time to reduce those unwanted weight.

Over the course of yesteryear year, Rob Kardashian has been can not slim down. The reality star has taken on a rather ambitious workout routine, but he's still finding it hard to slim down. Fortunately, he's a great advocate: celebrity trainer Gunnar Peterson.

Inside a recent interview with People, Gunnar explained that, despite all the nasty criticism on Twitter, Rob has been spending so much time to adopt a healthier lifestyle. "We're doing intervals with strength movements: squats, the sled, swings and push presses. It comes down to getting his heartbeat up and keeping up."

Although Rob's goal would be to lose a lot of weight, Gunnar is not eager to track his progress having a scale. "I'm not big on measurements. Until a person looks in the mirror and it is happy with themselves, you haven't reached your workout goals."

Gunnar adds that, in spite of stereotypes suggesting that it's easier for celebrities to shed weight, access to an individual trainer doesn't necessarily turn the procedure into a cake walk. Between his sock line and continued family drama, Rob is super busy and therefore, not necessarily able to make it to the gym. Still, Gunnar thinks that, with effort, the truth star can definitely acquire a slimmer physique.

Do you think Rob Kardashian's weight loss endeavors will prove successful? Hold forth within the comments section below!