The Made In Chelsea star will enter the Australian jungle tonight as a late arrival alongside TOWIE's Ferne McCann and Ex on the Beach star Vicky Pattison.
Speaking on I'm A Celebrity… Get Me Out Of Here NOW!, Spencer said: "I think being stripped down to nothing is essential every so often. Part of me actually wants to experience what it would be like to be a Buddhist and be relinquished of all your possessions and stuff. I want this to be a bit of a life changer."
He added: "I would like to do all the trials and get involved and feel pain."
As for what he hopes to achieve from the show, he said: "Negative press has never bothered me, but it's going to be nice for people to see me as me – and not on a spot talking about a subject in Made in Chelsea."
I'm A Celebrity continues at 9pm on ITV.