Sam has signed up for the ITV reality show after helping lead Great Britain to victory over the Netherlands in the women's field hockey final at the Rio Olympics in August.
But the 28-year-old reckons that was a walk in the park in comparison to living rough in the Australian outback.
"Yes, I am really looking forward to the challenge, but gosh, going in the Jungle is way tougher than playing in that penalty shoot out in the Final of the Olympics!" she said.
"I am the most confident when I am on the hockey pitch. You are trained and grilled for every scenario and for what is going to happen. I know what to do if I get myself in a difficult position but this is brand new!"
As always, the celebrities will encounter all sorts of jungle creatures in the dreaded Bushtucker Trials.
Sam continued: "I absolutely hate cockroaches, spiders and anything small, to the point I will cry. I am girly emotionally and my reaction is to just panic when I see them.
"For me, to go in the Jungle is a huge opportunity to get over that fear. I would be mortified knowing the whole British public are watching me and I can’t do a task that other people have achieved in the past."
While Sam has pledged to try her very hardest to earn food for the camp, it seems she won't be too fond of anyone that doesn't.
"I will speak my mind if I do disagree with someone. If they don’t try on a trial, I will get frustrated," she added.
I'm A Celebrity is back on Sunday at 9.00pm on ITV.