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Perhaps it was not just a broken heart that had Rob Kardashian heading for the junk food.
The self-proclaimed fat-boy wore a marijuana-leaf shirt as he worked up a sweat in the Hollywood Hills on Thursday.
The Primitive Moving Co T-shirt featured three marijuana leaves and had '420 moving company' printed on it - 420 being a street code for the drug.

 

Let's get physical! Rob Kardashian and his pals go for his daily walk in Studio City, California, on Thursday as he continues his bid to loose weight

The Keeping Up With The Kardashians star teamed the shirt with thick tracksuit pants as he and his friends started their walk in Studio City, California.

Since he embarked on his 60-day health kick hikes have become a daily part of Rob's routine.
And while his choice of shirt was not promoting a healthy lifestyle, his actions certainly did.

 

 

In the red: The 25-year-old wore a controversial shirt which featured images of marijuana leaves

The 25-year-old - whose birthday is coming up on Sunday - has been spotted hitting the walking trails around Los Angeles as he battles to loose 40 pounds.
The significantly heavier reality star has claimed his relationship breakdown with British pop singer Rita Ora caused him to put on the extra weight.

 

Getting hot in here: Rob wore think tracksuit pants despite Los Angeles' hot weather

Since their split at the end of last year, Rob has openly acknowledged his weight gain posting pictures of his diet food on Twitter declaring it the 'fat boy diet'.

Heartbreak weight: The reality star said his breakup with pop star Rita Ora, pictured here, led to him gaining 40 pounds

This week Rita finally talked about the relationship, saying she feared it might have ruined her career after Rob said on Twitter she had cheated on him with 20 men.
The 22-year old told Look: 'I don't vocalise things that don't deserve attention. But it was something that was so unnecessary. Why would you flood people's brains with unnecessary s**t?
'Twitter... can ruin your life. I thought I nearly had a 'ruined' moment, but no.
'When you're involved with someone for a while and they decided to express their feelings to the public - that's not my personal way of therapy, but I guess everyone takes split-ups differently.'
But while Rob took the break up hard, he seems to be doing a lot better and has been spotted out at some of Hollywood's top clubs recently.
On Wednesday night Rob was seen at the Emerson nightclub wearing black leather trousers that looked a lot like those favoured by his soon to be brother-in-law Kanye West.
He also has a lot to look forward too, as with his birthday just days away Rob is off to Las Vegas, Nevada, to throw himself a party at 1Oak Nightclub on Friday.
But it is not all play and no work as the 25-year-old is also appearing at the family's store at the Mirage casino, Kardashian Kaos, to sing autographs on his newly launched sock line.

 

Black can be slimming: On Wednesday night Rob was seen at the Emerson nightclub wearing black le