Youll need a strong stomach for this one. For this list, were looking at the craziest things that British wildlife expert and daredevil Bear Grylls has done. Our countdown includes crossing a river on a tree trunk, eating a reindeer heart, falling from a helicopter in Sumatra, and more! Did YOUR favorite Bear Grylls moment make the list? Let us know in the comments!

Watch more great Bear Grylls videos here:
Top 10 Crazy Bear Grylls Celebrity Challenges: https://youtu.be/408imFICbtU
Top 10 Insane Bear Grylls Moments: https://youtu.be/zxQU55pItxU
Top 5 Myths about Extreme Survival: https://youtu.be/0JndnDHVdxg

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