The TV presenter will join another nine celebrities on Sunday night when they arrive in the Aussie camp to begin their fight for King or Queen of the Jungle.
But Melanie has pointed out her career is going perfectly well and this isn't a bid to raise her profile or find more work. She'll be hosting ITV's Let's Do Christmas this festive season.
"Doing this is not a resurrection of a career. It's a bit of fun and I am getting paid for it! I am not doing it for nothing. It is a job, after all!"
The Let's Do Lunch with Gino and Mel star has been approached for the jungle before but has always declined the offer. This time, however, she feels ready.
"I am doing this because I do feel like I can handle it this year," she said. It's a big challenge. I have had a few of those recently with charity things I have done and I thought, 'Sod it' this year! I feel tough and I don't want to do it when I am too old! It is going to be an experience and I want to have fun."
Mel added that she isn't concerned about being filmed and watched 24 hours a day.
"I've only done it a few times where I am not presenting a show. But people haven't seen me wake up before! This will be a challenge and again, I wouldn't have signed up for this if I couldn't handle it."
But she will have to struggle with a few phobias while Down Under including heights and enclosed spaces.
"It will be a testing time for me but I know myself well enough not to put myself in a situation I can't handle. If I felt like it was going to be a traumatic experience, I wouldn't have signed up for it. I am hoping I am going to be fine but none of the trials are pleasurable are they?"
No, Mel, they're not!
I'm A Celebrity begins Sunday 16 November at 9pm on ITV
Check out all of this year's jungle campmates here!