What Doesn't Kill Us: How Freezing Water, Extreme Altitude, and Environmental Conditioning Will Renew Our Lost Evolutionary Strength

This book was a great read for me. It’s quite amazing what the body is capable of when your mind is in the right place, I encourage you to check it out! Also, this documentary about Wim Hoff if you haven’t seen it is so cool. It’s only 40 minutes and very worth the watch:)