Unbreakable
By Ari Whitten, M.S. and Alex Leaf, M.S.
By Ari Whitten, M.S. and Alex Leaf, M.S.
By Ari Whitten, M.S. and Alex Leaf, M.S.
By Ari Whitten, M.S. and Alex Leaf, M.S.
Category: Self-Improvement & Inspiration
Category: Self-Improvement & Inspiration
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$27.99
Mar 17, 2026 | ISBN 9781401972615
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Mar 17, 2026 | ISBN 9781401972622
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Table Of Contents
Introduction
PART 1: BUILDING HEALTH
Chapter 1: Becoming Unbreakable
Chapter 2: The Real Reason You Die
Chapter 3: Challenge. Adapt. Thrive.
Chapter 4: “Stress” for Strength
PART 2: ANCESTRAL CHALLENGES
Chapter 5: Muscular Challenges (Adaptations of Strength)
Chapter 6: Endurance Challenges (Adaptations of Endurance)
Chapter 7: Movement Challenges (Adaptations of Mobility, Agility, and Balance)
Chapter 8: Thermal Challenges (Adaptations of Heat Tolerance)
Chapter 9: Cold Challenges (Adaptations of Cold Tolerance)
Chapter 10: Cognitive Challenges and Psychological Stress (Adaptations of Cognitive Reserve Capacity, Knowledge/Expertise, and Psychological Resilience)
Chapter 11: Famine and Food Shortage Challenges (Adaptation of Metabolic Flexibility
Chapter 12: Hypoxia/Hypercapnia Challenges (Adaptations of Tolerance to Low Oxygen States)
Chapter 13: Ultraviolet (UV) Light, Blue Light, and Red/Near-Infrared Light Challenges (Adaptation of Cellular Detoxification and Antioxidant Defense Systems)
Chapter 14: Phytochemical Challenges (Adaptation of Inborn Antioxidant Defense and Detox Systems)
Chapter 15: Microbes, Infections, and other Immune System Challenges (Adaptation of Immune Systems and Immune Memory)
Chapter 16: Fear Challenges (Adaptation of Courage)
Chapter 17: Stress, Discomfort, and Doing Difficult Things (Adaptations of Willpower, and Mental and Physical Toughness)
Conclusion
APPENDIX: Unbreakable Reserve Capacity Metrics
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