What happens when British television adventurer Bear Grylls and “Titanic” actress Kate Winslet come together? Well, in a true Grylls way, he makes her eat roasted earthworms and wash her dirty undergarments on television.

The actress was seen gagging and recoiling in disgust as she tried her best to chew down the worms on Grylls' new survival show “Running Wild With Bear Grylls.” "They are very bitter," a visually uncomfortable Winslet told him, according to New Zealand Herald. "I'm sure that's what chewing burnt electricity wire tastes like."

At one point Grylls asks her to keep the fish they caught inside her top, but Winslet did not like the idea of having “fish guts all over” her chest. She then headed to a nearby river to wash her undergarments. During the two-day stint with with Grylls in Snowdonia, Wales, Winslet had her fill of adventure. She was seen pushing herself into a dinghy after swimming in icy cold waters, rappelling on the rocks, flying a parachute with Grylls and lighting a fire with a tampon. 

Winslet also had a heart-to-heart chat with Grylls about her teenage years, when she was bullied in school because of her curves. "I was chubby, always had big feet, the wrong shoes, bad hair,” Winslet is quoted as telling Grylls by Mail Online.

"When I grew up, I never heard positive reinforcement about body image from any female in my life,” she continued. But she makes sure that she talks about positive body image with her 14-year-old daughter Mia.

“I stand in front of the mirror and say to Mia: "We are so lucky we have a shape. We're so lucky we're curvy." And she'll say, "Mummy, I know, thank God",” added the actress. Grylls' survival series will also feature Kate Hudson and comedian Ben Stiller. “Running Wild with Bear Grylls” will air every Monday (10 p.m. ET) on NBC.