Kim Kardashian and Kanye West's Wedding: Rob Kardashian Hits the Gym

PHOTO: Rob Kardashian is seen on April 01, 2013 in Los Angeles, California. GVK/Bauer-Griffin/GC Images
Rob Kardashian is seen on April 01, 2013 in Los Angeles, California.

One day after opening up about his weight, Robert Kardashian tweeted early this morning that he was hitting the gym in his effort to shed some pounds.

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"#gymtime #adios," he tweeted.

Kardashian was spotted on Monday at LAX, heading to Paris for sister Kim's wedding this weekend.

After being spotted, Robert tweeted Tuesday about the comments he was receiving from photos taken.

Read: Robert Kardashian Speaks Out About His Weight

"so i found out i was trending for being fat... thank you all it really made my day :)" he posted.

He continued, "and to the blogs saying i went to fat camp or rehab LOL then why am i still fat u fools?? y'all must have run out of real news. "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."

The former "Dancing with the Stars" contestant added that he doesn't need people making comments about his weight.

Read: Rob Kardashian Posts Cryptic Tweet on 'How Much It Hurts'

"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," he added.

Kardashian's sister Khloe backed up Robert tweeting: "What shallow souls some of you are. Its sickening to critique anyone off of their appearance. Grow up!"

This comes more than a month after the "Keeping Up with the Kardashians" star, 27, posted a cryptic tweet in early April, saying: "no one will ever understand how much it hurts."

Kardashian has deleted that tweet among others and only has seven tweets up on his page at the moment.