Rob Kardashian Will Get Back in Shape Without A Doubt, Trainer Insists

Rob Kardashian will get back to the best shape of his life without question, according to famed celebrity trainer Gunnar Peterson.

Peterson has famously trained the Kardashian family and celebrities like LaLa Anthony. Now that he is training Rob, 26, the fitness guru is singing the overweight Kardashian brother's praises. While Rob has gained a considerable amount of weight recently, Peterson insists he is an athlete.

"Rob is such a solid guy, when he gets in here. I don't care if he weighs 50, 100 or 200 pounds. He works like an athlete," he told E! News. "He never tries to beg out of a set. He never tries to hop off the cardio a minute or two before. He goes the distance every time."

While Peterson spoke about Rob's athletic abilities consisting of being "a solid basketball player," "a serious runner," he also spoke about Rob's dedication in the gym. He insisted that the "Keeping Up With The KArdashians" star has not cheated on a rep or a minute in the gym and is sure that he will get back to his ideal weight.

"There's no doubt in my mind. With 26 years of training experience of doing this, I can tell you without hesitation that Rob Kardashian will get back to his best shape ever," Peterson told E!. "There's not one doubt in my mind."

Rob previously tweeted about his weight gain after he became a trending topic on Twitter following speculation when he was pictured going to the airport on his way to celebrate Kim's wedding initially.

"First, i don't believe in rehab or therapy or anything of that sort and second I'm a grown man and will work on myself when i choose," he tweeted. "I'm aware that I'm fat that def aint a surprise to me lol and my only therapy will be in the gym anyways had to say somethingggggggggg."