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The new episode of \"Running Wild with Bear Grylls,\" premieres Monday night at 9 p.m. ET on National Geographic. In clips teasing the new episode on social media, Kutcher is seen pushing himself to the limit as Grylls takes him through the Costa Rican jungle and crossing a ravine. Clips also show Grylls pranking Kutcher about crocodiles in a river as they look for fish to eat.

You can watch Kutcher's adventure on Disney+ starting Aug. 10.

Kutcher tweeted Monday night confirming that he experienced a rare form of vasculitis.

\"Before there are a bunch of rumors/chatter/whatever out there. Yes, I had a rare vasculitis episode 3 yrs ago,\" he said. \"(Autoimmune flare up) I had some impairments hear, vision, balance issues right after.\"

Before there are a bunch of rumors/ chatter/ whatever out there. Yes, I had a rare vasculitis episode 3yrs ago. (Autoimmune flair up) I had some impairments hear, vision, balance issues right after. I fully recovered. All good. Moving on. See you at the 2022 NY Marathon w/Thorn

— ashton kutcher (@aplusk) August 9, 2022

He added that he's putting it behind him and looking forward to what's next.

\"I fully recovered,\" Kutcher said. \"All good. Moving on. See you at the 2022 NY Marathon w/Thorn.\"

The Walt Disney Company is the parent company of ABC News and \"Good Morning America.\"

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