What role does your brain play in determining your survival odds in the wilderness?

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Bear Grylls, the star of Discovery Channel's "Man vs. Wild," undoubtedly has a better chance of surviving in the wild compared to the average person. With years of survival training and a career built on intentionally getting stranded, Grylls is well-prepared. However, despite his expertise, he shares one critical trait with anyone venturing into the wilderness — a brain.

Among all the elements influencing wilderness survival, your brain plays the most critical role in determining your chances of making it through. When individuals become mentally overwhelmed by the challenge of staying alive, they often fail to do so.

For this reason, numerous wilderness guides highlight that your brain is the ultimate deciding factor in survival scenarios. It holds practical knowledge of outdoor skills — such as how to start a fire using sticks or how to construct a shelter in heavy snow. Additionally, the brain offers intangible abilities like intuition and judgment, guiding choices like whether to stay or move, where to build a fire, or where to set up shelter.

Survival success might seem straightforward: a mix of preparation and instinct. However, the body complicates this narrative. The intense stress of trying to survive in the wild can either improve or hinder our chances, depending on its physical and mental impact.

To manage this automatic response to extreme stress, survival professionals stress the value of maintaining a positive mental attitude (PMA). Without it, stress rapidly deteriorates both body and mind, rendering prior survival knowledge useless. Thus, survival becomes a delicate balance between unconscious reactions and conscious decisions in our brains.

Where do stress and attitude intersect? Since stress is unavoidable, can positive thinking miraculously bring you home, much like Dorothy clicking her ruby slippers in "The Wizard of Oz"?

Continue to the next page to discover how stress can both aid and hinder your efforts to survive in the wilderness.

Negative Psychological Reactions

Losing your way can be an intensely terrifying and unsettling experience. Research indicates that people universally experience agitation and distress when they find themselves lost. This form of psychological stress is closely tied to surviving in the wild.

Think of your stress response in the wilderness like a stove. When activated, it gets things moving, but excessive heat too quickly can cause damage. When you realize you're in a survival scenario, avoid panicking and take a moment to strategize. If your stress remains manageable, it can actually work in your favor.

While stress often carries a negative connotation, it can yield beneficial outcomes in the short term. When our brains detect a threatening situation, the hypothalamus activates, initiating the fight-or-flight response. Located at the base of the brain, the hypothalamus regulates hormone secretion and prompts the adrenal glands to release hormones like adrenaline and cortisol.

Adrenaline increases heart rate and blood pressure, prompts the liver to release glucose for energy, and directs blood flow to major muscle groups. Meanwhile, cortisol suppresses non-essential functions such as digestion and growth during critical moments. In fight-or-flight scenarios, your pupils expand, narrowing your focus and reducing peripheral awareness. It also diminishes fine motor skills, redirecting energy toward larger movements like running or lifting.

For short time spans, these hormones can propel us into a heightened state of alertness, akin to the "Incredible Hulk." In survival scenarios, this stress response can drive us to address immediate dangers by building shelters, starting fires, or avoiding predators. Interestingly, moderate stress can enhance performance, thanks to these physiological changes.

However, the relationship between stress and performance follows an arch-shaped curve. While humans thrive under moderate stress, excessive stress leads to a decline, potentially resulting in mental and physical paralysis. This delicate balance means chronic stress poses a greater threat to survival than any immediate danger, such as a grizzly bear.

Persistent stress hormone release drains your physical and mental energy when conservation is crucial. Once the initial stress subsides, the parasympathetic nervous system restores functions suppressed by cortisol. This cycle depletes your stamina, especially if repeated frequently. Long-term cortisol exposure can also contribute to depression, undermining your mental resilience and will to survive—a critical factor in life-or-death situations.

Next, we’ll explore the brain’s response when we shift from negativity to positivity and why survival experts emphasize the value of a positive mental attitude.

Positive Mental Attitude

The advantages of keeping a positive outlook in the wild are often obvious. Everyday life shows us that our mood can shape results. But how exactly does this "Pollyanna principle" impact your brain during survival situations?

A touch of optimism can make a world of difference when you're miles away from civilization, calling a makeshift shelter your temporary home. Though it might sound like advice from a self-help guide, maintaining a positive mental attitude (PMA) is a critical component of survival.

Broadly speaking, PMA helps counteract unconscious stress, enabling clearer thinking and better decision-making. For instance, recall how the fight-or-flight response narrows your focus, limiting your awareness of your environment? By fostering a positive mindset and reducing stress, you can heighten your situational awareness—an invaluable skill when coexisting with potentially dangerous wildlife.

But how can you maintain positivity in such dire circumstances? Survival guides offer numerous strategies, including the following:

We’ve established that a positive outlook can boost survival odds, but what’s the science behind it? How do positive thoughts translate into tangible, life-saving outcomes?

The field of positive psychology, which examines how positive thoughts and emotions influence individuals, emerged relatively recently. Studies have shown a connection between optimistic thinking and emotions and successful survival outcomes. This is because positivity enhances the brain's ability to think broadly, fostering innovation and creativity. In survival scenarios, after addressing immediate needs, generating new ideas and effectively prioritizing tasks become essential for long-term survival.

From a physiological perspective, a positive mental attitude (PMA) counteracts the damaging effects of stress on the body. Consider how your body relaxes when watching a comedy compared to the tension felt during a suspenseful thriller. This relaxation helps conserve vital energy. Additionally, proper preparation and training for wilderness survival foster a positive mindset, as they equip you with the skills needed to handle challenges. Combining PMA with preparedness significantly increases your chances of survival.