Summer hiking in the Grand Canyon can be dangerous. Fatally so, in fact. But if you're going to take it on, at least do yourself (and those who might otherwise be forced to rescue you) the service of being physically and mentally prepared for an extreme physical activity in an extreme environment. Today, exercise physiologist and Canyon vet Coach Arnie shows us how becoming heat adapted is possible—if you're willing to put in the work.

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Please join the Grand Canyon Hiker Dude Show's private Facebook group by clicking here.

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To reach Coach Arnie, you can call or text him (yes, really!) at (602) 390-9144 or send him a message on Instagram @painfreearnie.

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The Rim2Rim Pack from Bright Angel Outfitters is now available! Check out our Canyon-inspired day pack by clicking here.

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Have an idea for the show, or someone you think would be a great guest? Reach out to Brian anytime at gchikerdude@brightangeloutfitters.com.

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The all-new Grand Canyon Shade Tracker is LIVE!! This incredible interactive tool lets you see when and where you'll have precious shade on your Grand Canyon hike—every hour of every day of the year. Check it out at gcshadetracker.com. Another free resource from Bright Angel Outfitters aimed at making your Grand Canyon adventure the best and safest it can be.

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For Canyon-centric hoodies, sweatshirts & tees—including the Victor Vomit tee and our new Rim-to-Rim collection— please visit BrightAngelOutfitters.com

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For more great Grand Canyon content, please check us out on the following platforms:

YouTube (@GrandCanyonHikerDude) for informative and inspirational videos

Instagram (@GrandCanyonHikerDude) for photos from the trail

TikTok (@GrandCanyonHikerDude) for fun and informative short-form videos

Facebook (@GrandCanyonHikerDude)