The Art of Healthy Stress

“We have become the first species that considers comfort a biological condition,” says neuroendocrinologist Ascanio Polimeni. But the body is made to fluctuate, not to remain flat like a stable thermometer: too much continuous stress becomes harmful, but dosed and balanced it improves the body’s ability to repair itself. There’s no need to suffer: a practical guide.

Guiding us in this interpretation is the neuroendocrinologist Ascanio Polimeni, director of the LongevYa Project and the Regen4Life Research Group, who has been studying how the body reacts to micro-stimuli for some time. «Biology doesn’t like extremes, it loves oscillations», he says with a simplicity that doesn’t hide the elegance of the concept. We are designed to respond, to contract and relax, to heat up and cool down, to move from abundance to deficiency. But our era has removed every oscillation, building a flat, impeccable and – paradoxically – unphysiological habitat. The lack of daily variations, from thermal to nutritional ones, impoverishes our internal resilience, making the body more fragile in the face of even minimal challenges. And it is no coincidence that those over centenarians, observed in various long-lived populations, are often people subjected to little continuous stress or only partial stress: their organism extinguishes the inflammatory fire with surprising rapidity, almost automatically.

the heart of the idea is simple: small stresses educate the cell. They stimulate the mitochondria, activate heat shock proteins such as HSPs (Heat Shock Proteins, proteins that protect cells from damage), modulate the metabolic pathways mTOR (which promotes growth and energy storage) and AMPK (which activates energy saving mechanisms), awaken autophagy, the process by which the body eliminates waste and repairs internal structures. It is a biochemical ballet that is activated only when faced with a challenge, never in total comfort. And when this ballet is missing, we pay for it in terms of chronic inflammation, fragility, loss of muscle mass and premature aging.

From this principle the scholar draws a simple and profoundly human system: reintroducing into daily life those stimuli that our modernity has erased. The first is the break from food. Not extreme fasts, but breaks. Hours in which the body does not receive energy and can dedicate itself to internal maintenance. In that interval AMPK is activated, mTOR is reduced, autophagy pathways are opened. The cell does not weaken: it resets. it is a mechanism that we have known for millennia and that we have only unlearned in recent decades, transforming the day into a continuous flow of calories. Even small calorie jumps throughout the day, such as skipping the afternoon snack or cutting back on breakfast slightly, can act as beneficial micro-stressors. Concrete examples: eating breakfast later, skipping a light meal, or taking a brisk walk before main meals. the scholar adds: “There is no need to suffer: just give the body the opportunity to do its job.” And remember that excess sugars overload the body with metabolic toxins, making it much harder to put out the fire of inflammation: more sugar,less ability to recover.

The same logic applies to movement. The contemporary obsession with intense training has obscured the simpler truth: the body responds better to regularity than to heroism. Moderate but daily effort activates the hypothalamic-pituitary-adrenal axis in a harmonious way, without overwhelming it. Brisk walking, light resistance exercises, regular movements. It is a dialogue between the muscular and neuroendocrine systems, not a battle. Studies show that even intermittent training, with periods of effort alternating with recovery, stimulates the hormonal axis more effectively than continuous grueling activity. Mark Matson, for exmaple, studied exposure to hormetic stimuli in rats, demonstrating that intermittent stimuli, such as labyrinthine paths and limited movement, improved resilience and reduced the advancement of chronic pathologies compared to low-stimulus groups. For this reason the expert reminds us that “movement doesn’t just shape the body, it shapes the resilience of the entire system”. Even short sessions of yoga or mobility exercises can become healthy micro-stresses if incorporated regularly into your day.

Eat breakfast later or skip a light lunch, include a brisk walk before main meals.

A basic chapter concerns thermal oscillations,the most innocent of stresses and the one that we have most radically excluded. We have become thermostated, unable to tolerate a gust of air. But biology reacts precisely to thermal stimuli: cold activates shock proteins (HSP), brown adipose tissue (brown fat: tissue that burns energy to generate heat), better vascularization; the heat stimulates sweating, electrolyte exchange and cardiovascular flexibility. Again, there is no need to suffer: you just need to live with reality a little. Even short exposures to the cold or to light saunas, alternating hot and cold, seem to increase cellular recovery capacity.
The same goes for hormethines,those compounds present in foods that exert small micro-stresses on cells. The polyphenols of berries, the bitter compounds of vegetables, the sulphurous substances of cruciferous vegetables, hot spices: they are not miracle potions but cellular trainers. the plant p

The Inflammatory Rollercoaster: Acute vs. Chronic Stress

Inflammation is a complex biological response crucial for healing and survival. however, not all inflammation is created equal. Understanding the difference between acute and chronic inflammation, particularly in relation to stress, is vital for maintaining overall health.

Acute Inflammation: The Initial Response

Acute inflammation is the body’s immediate response to a harmful stimulus – think injury, infection, or even intense physical exertion. it’s a short-term process characterized by redness, swelling, heat, and pain. This response is designed to mobilize the immune system, remove the damaging agent, and initiate the healing process. It involves a rapid release of inflammatory molecules, effectively signaling the body to address the threat. Crucially,this is followed by an anti-inflammatory response that “puts out the fire”. This is a physiological adaptive mechanism.

Chronic Inflammation: The Persistent Problem

Chronic inflammation, on the other hand, is a prolonged and frequently enough low-grade inflammatory state. It arises not from a single, acute event, but from persistent activation of the inflammatory response.This is often due to an accumulation of situations (psychological, metabolic, environmental) that persistently activate a pro-inflammatory response, without the system being able to “reset”. Common contributing factors include poor nutrition, a sedentary lifestyle, environmental exposures, and ongoing psychological stress. Chronic inflammation is linked to a wide range of health problems, including heart disease, autoimmune disorders, and even certain types of cancer.

The Role of Stress

Stress plays a meaningful role in both types of inflammation. Acute stress can trigger a temporary inflammatory response, which is usually well-managed by the body’s natural regulatory mechanisms. however, chronic stress disrupts this balance, leading to sustained inflammation. The constant activation of the stress response keeps the immune system on high alert, contributing to the development and progression of chronic inflammatory conditions.