See Natalie Portman and Bear Grylls Filter Water Through His Underwear

Oscar winner Natalie Portman joins adventurer Bear Grylls on the premiere episode of Running Wild with Bear Grylls: The Challenge, debuting Monday on National Geographic

Natalie Portman and Bear Grylls Filter Water Through His Underwear

Ever Wondered How To Filter Water Through Underwear? Bear Grylls and Natalie Portman Show You

Natalie Portman is put to the test by Bear Grylls on his show Running Wild - Mirror Online

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Running Wild With Bear Grylls - Articles, Videos, Photos and More

Natalie Portman is put to the test by Bear Grylls on Running Wild

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