Featured articles
Selected for what truly matters.
ArticleVitamin D as a neuro-immune regulator: why deficiency can look like fatigue, low mood, and recurrent infections
Vitamin D is not a “seasonal support”: it is a biological signal that speaks to immunity, the brain, muscles, and…
ArticleElectrolytes and autonomic regulation: when sodium and potassium explain fatigue, headaches, and “physical anxiety” without obvious dehydration
Drinking more does not always solve the problem. In some cases, it is the balance between water, sodium, potassium, and…
ArticleIron and the brain: how a mild deficiency can reduce mental energy, thermoregulation, and sleep quality (even without anemia)
Iron deficiency is not synonymous with anemia. Even with normal hemoglobin, low ferritin can translate into mental…
ArticleMild dehydration and cognitive symptoms: when it’s not “fatigue,” but regulation (osmolarity, plasma volume, autonomic function, heat) — and why drinking more doesn’t always solve it
Mild dehydration is not just “thirst”: it is often a regulatory issue involving osmolarity, plasma volume, autonomic…
ArticleCreatine beyond muscles: an energy buffer for the brain under load (and why it is not a “nootropic”)
Creatine does not “speed up” the mind: it stabilizes available energy when the brain is under load. Understanding the…
ArticleMagnesium and nervous system regulation: why it “calms” some people and not others
Magnesium is not a sedative. It is a regulator: if the system is under load (stress, fragmented sleep, deficiency), it…
ArticleGlycine and sleep: why a simple amino acid can improve nighttime thermoregulation (without sedation)
Sleep quality does not depend only on “switching off the mind,” but also on a precise thermal transition: lowering core…
ArticleMouth breathing and mental fatigue: why “breathing poorly” can keep the nervous system on alert
Mouth breathing is not just a “habit”: it can change respiratory chemistry and autonomic tone. When CO2 is poorly…
ArticleHyperarousal fatigue: why you can feel tired but “wired” (and what the nervous system is saying)
Hyperarousal fatigue is a common paradox: low subjective energy, but a nervous system “on alert.” It is not just…
ArticleHRV: what it really measures, why it can drop when you feel “fine,” and how to read it without control anxiety
HRV is not an instant health score: it is a trace of regulation. It can drop even on “good” days due to load,…
ArticleDecision fatigue is not just psychology: how decision fatigue modulates mental energy, executive control, and autonomic regulation
“Decision fatigue” is not just a psychological feeling: it is a signal of regulatory load. When choices accumulate,…
ArticleWhy training “calms you down” but can also keep you awake: the biological ambivalence of exercise on anxiety and sleep
Exercise can reduce anxiety and improve sleep, but in some people (or at certain times of day) it produces the opposite…