BIOHACKING STRESS FOR LONGEVITY AND HEALTH

Teemu Arina, Olli Sovijärvi & Jaakko Halmetoja

Teemu Arina has a professional career of over 15 years as a technology entrepreneur, author and speaker. He is one of the forefront thinkers on the intersection of the human and the machine, social media, digital work and online learning. He is a Leonardo Award laureate under the patronage of European Parliament for "Humanity in Digitization". Mr. Arina is the founder of three award winning technology companies, co-founder of Quantified Self & Biohacking Finland and co-author of the Biohacker’s Handbook for optimizing health and wellbeing with technological and biological tools. Mr. Arina is a popular keynote speaker who has presented internationally in countries such as USA, UK, Japan, Hongkong, Russia, the Netherlands, and Germany. Olli Sovijärvi is a Licensed General Practitioner at Helsinki Antioxidant Clinic and co-author of the Biohacker’s Handbook. He is one of the pioneers in holistic medicine in Finland and the only Finnish medical doctor with a psychologic-philosophical Integral Theory degree from John F. Kennedy University. Sovijärvi graduated 2006 as a licensed physician from University of Helsinki. He has pioneered health podcasts in Finland with Helsinki Paleo Podcast and Biohacker’s Podcast. Sovijärvi has also consulted many natural health brands and organizations. Jaakko Halmetoja is a nutrition expert, author and professional speaker. Jaakko has managed multiple special caféterias in Tampere and works as a product developer for food growth companies. Halmetoja has been popularizing health benefits and unique uses of e.g. chaga mushroom, chocolate, wild foods, various berries and medicinal herbs. Halmetoja maintains a non-profit website loydalahde.com, a database for finding local springs around Finland and hosts weekly talk show – InspiRadio Podcast. He has also written a book on chaga mushroom as well as co-authored the Biohacker’s Handbook. Halmetoja is a popular lecturer with over 500 public lectures and performances.

Teemu Arina, Olli Sovijärvi, and Jaakko

The core ethos of biohacking is to get more self-knowledge. When you are more knowledgeable, you have more tools and you are no longer a slave to what is happening outside of you. Doing more is not better. Doing better is better.

Summary

- Use hormetic stressors like saunas and ice baths in moderation to trigger beneficial adaptations and supercompensation, avoiding the damage caused by excessive or chronic stress. - Achieve balance between the sympathetic and parasympathetic nervous systems to ensure the body can transition from fight-or-flight states to essential rest, digestion, and immune functions. - Actively stimulate the vagus nerve through deep breathing and slow exhalations to shift the body into a restorative state, reducing the physiological impact of modern environmental stressors. - Incorporate adaptogenic herbs such as Rhodiola and Schisandra to modulate the HPA axis, helping the biology adapt to stress over time and increasing the mental space between stimulus and reaction. - Optimize recovery by aligning lifestyle habits with natural rhythms, such as delaying caffeine intake to match cortisol cycles and prioritizing both deep and REM sleep for full repair.

Article

Biohacking Stress For Longevity And Health

At Biohacker Summit 2017 Helsinki, Three Finnish Pioneers Reframed Stress Not As The Villain Of Modern Life, But As A Force That Could Be Trained, Timed And Turned Toward Resilience

On Friday, 13 October 2017, at **Biohacker Summit 2017 Helsinki** in **Helsinki, Finland**, speakers **Teemu Arina, Olli Sovijärvi and Jaakko Halmetoja** took on one of the most overused and misunderstood words in modern health: stress.

Their presentation, **“Biohacking Stress For Longevity And Health,”** did not promise escape from pressure. Quite the reverse. Stress, they argued, was inescapable. The task was not to eliminate it, but to teach the body how to move through it without breaking.

“**Stress is an unavoidable part of life, but it is also a learnable skill,**” Olli Sovijärvi told the audience. “**You can totally become better at it by finding the right balance for your autonomic nervous system.**”

It was a practical thesis delivered with the knowing confidence of men who had spent years moving between medicine, nutrition, technology and self-experimentation. Together, they sketched a model of health that rested on one central insight: resilience is not built in comfort alone, but in the intelligent use of challenge.

The New Argument About Stress

For many, stress has become shorthand for damage. The speakers pushed back against that flattening idea. A life with no stress at all, they suggested, would not be a healthy one. The real distinction lay between acute, adaptive strain and the grinding chronic overload that leaves the nervous system trapped in fight-or-flight.

This was where the language of biohacking entered with force. Hormetic stressors such as **saunas, ice baths, breathwork and exercise** were presented not as endurance stunts, but as tools for training recovery. In the right dose, they could trigger adaptation. In the wrong dose, they could do harm.

Sovijärvi described this principle in simple terms. Too little stress produced stagnation. Too much produced dysfunction. Between them sat the physiological sweet spot where growth happened.

That is the logic of **supercompensation**, a concept borrowed from sports science but extended here to daily life. The body, when taxed and then allowed to recover, often returns stronger than before. The danger begins when stress is repeated without sufficient repair.

Inside The Nervous System’s Tug Of War

A recurring theme of the talk was the balance between the **sympathetic** and **parasympathetic** branches of the autonomic nervous system. One mobilises the body for action. The other allows it to rest, digest, reproduce, repair.

Modern life, the speakers said, heavily favoured the former. Endless notifications, work demands, social media, rushed meals, poor sleep and constant stimulation kept many people in a state of low-grade activation long after the original threats had disappeared.

Teemu Arina framed this imbalance with characteristic clarity. If the body believed it was running from danger, it would redirect resources accordingly. Digestion slowed. Immunity weakened. Recovery stalled.

The result, Sovijärvi noted, often appeared first in the gut. He linked stress directly to digestive dysfunction, arguing that many people were trying to nourish themselves in a state biologically hostile to digestion. He recalled patients whose symptoms eased not through a miracle supplement, but through something more basic: breathing slowly after a meal.

That, in turn, led to one of the session’s most practical lessons.

Breathing As A Biological Lever

“**Breathing is the most direct way to activate your parasympathetic nervous system,**” Sovijärvi said. “**A slow exhalation is the key to shifting from a state of stress to a state of recovery.**”

Among all the gadgets, herbs and cold exposure protocols discussed on stage, breath stood out for its simplicity. No purchase was required. No expertise was needed to begin. The act of extending the exhale, they explained, stimulated the **vagus nerve**, helping the body pivot from vigilance into restoration.

This was not discussed as mysticism, but as physiology. The speakers returned again and again to the idea that small interventions, repeated consistently, could alter the body’s baseline state. A few deliberate pauses during the day. A calmer meal. A slower breath before opening email or social media. Such acts were framed not as indulgent wellness rituals, but as methods of preserving what Arina called **cognitive ergonomy**.

Sleep, Cortisol And The Lost Art Of Winding Down

Stress, the panel argued, did not end when the workday did. It followed people into bed, where it quietly shaped the quality of their repair.

“**It is important to wind down in the evening because the state of mind that you go to sleep in is the state of mind that you often wake up in,**” Arina said.

The talk drew an important distinction between the stages of sleep. **Deep sleep**, concentrated in the early part of the night, was linked primarily to physical restoration. **REM sleep**, arriving more heavily later, was associated with psychological and emotional processing. To sabotage either was to wake repaired in one sense but frayed in another.

Jaakko Halmetoja extended this line of thought to **cortisol rhythms**, challenging the near-sacred status of first-thing coffee. Morning cortisol, he noted, naturally rises on waking. Adding a heavy hit of caffeine too early may spike the system further and worsen the afternoon crash. A modest delay in caffeine intake, he suggested, could improve energy stability across the day.

It was a typical move in this presentation: not a demand for abstinence, but a plea for better timing.

Adaptogens And The Search For Biological Buffer

If breathwork and sleep belonged to the low-tech end of the spectrum, **adaptogenic herbs** occupied a more specialised frontier. Halmetoja, a longtime advocate of medicinal plants and functional foods, described compounds such as **Rhodiola, Schisandra and Chaga** as tools that could help modulate the body’s stress response over time.

Their proposed mechanism, he said, ran through the **HPA axis**, the hormonal system involved in regulating cortisol and the broader stress response. Unlike stimulants, adaptogens were not presented as instant fuel. Their value lay instead in slowly increasing the space between trigger and reaction.

That description was revealing. For all the summit’s technological flair, the ultimate goal was not heightened stimulation, but expanded self-command.

Sovijärvi singled out **Schisandra** as especially striking, praising its immediate calming and clarifying effect. Yet both he and Halmetoja warned against the common biohacker impulse to pile intervention upon intervention. Start with one herb, they advised. Learn its effects. Respect the dose-response curve.

Even here, the language was less about conquest than about listening.

Closing The Loops Of A Digitised Mind

Perhaps the most quietly powerful idea of the presentation came from Halmetoja, who argued that many people lived with too many open mental loops. Tasks lingered in the background. Projects never fully ended. Attention remained snagged on what had already happened or what might come next.

“**Close the applications that are disturbing your cognitive ergonomy,**” he said. “**Make routines that remind your system that a cycle is over so that you are free to do something else.**”

These closure rituals could be deceptively small: a meditation before and after work, a cold swim after travel, a deliberate pause marking the end of one mode and the start of another. Such acts, the panel suggested, taught the nervous system something increasingly rare in contemporary life: how to stop.

This may have been one of the talk’s strongest insights. Stress was not generated only by intensity. It was also generated by continuity, by a life in which nothing was ever truly switched off.

The Ultimate Biohack

For all the summit’s appetite for data, devices and experimentation, Arina ended on an almost austere note.

“**The ultimate biohack is to eventually get rid of the tools,**” he said. “**You become so proficient that you no longer need external devices to manage your own biology.**”

It was an arresting line at an event built, in part, around tools. Yet it captured the larger philosophy behind the session. Technology, herbs, cold plunges, infrared light, breathing apps and biometric trackers were useful only if they taught a deeper competence. The point was never dependency. It was literacy.

At **Biohacker Summit 2017 Helsinki**, Teemu Arina, Olli Sovijärvi and Jaakko Halmetoja offered more than a catalogue of stress interventions. They offered a counterargument to the exhausted modern self. Not that life could be made frictionless, but that the body could be trained to meet pressure with rhythm rather than collapse.

In that reframing lay the real provocation of the talk. Longevity, in their view, was not simply a matter of avoiding strain. It was a matter of learning, with discipline and precision, when to activate, when to recover and when to let the system finally come back to stillness.

Part of Biohacker Summit 2017 Helsinki