Cognitive focus

Articles under this tag cover strategies to improve concentration, mental clarity, and sustained attention through training, nutrition, sleep, stress management, and targeted supplements. It matters because sharper focus supports better workouts, productivity, decision-making, and long-term brain health as men optimize performance and hormones.

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The essentials for cognitive focus — then explore the latest posts below.

The science of caffeine free energy drinks: How to boost focus without the crash

The science of caffeine free energy drinks: How to boost focus without the crash

Dr. Jonathan Pierce, PhD avatar
Dr. Jonathan Pierce, PhD: Clinical Psychologist & Neuroscience Specialist
Jan 10, 2026 · 11 min read

Caffeine-free energy drinks can boost focus without a “crash” by supporting real cellular energy—ATP production in the mitochondria (Krebs cycle) and oxygen/nutrient delivery—rather than blocking brain adenosine receptors, which masks fatigue while adenosine continues to accumulate. Here’s how ingredients like B-vitamins, amino acids, and electrolytes aim to power performance without triggering the cortisol-and-adrenaline stress spike. ...

Glycine for sleep and performance: The amino acid you might be missing

Glycine for sleep and performance: The amino acid you might be missing

Dr. Jonathan Pierce, PhD avatar
Dr. Jonathan Pierce, PhD: Clinical Psychologist & Neuroscience Specialist
Dec 09, 2025 · 10 min read

Glycine may improve sleep quality by helping lower core body temperature by roughly 2–3°F—a key physiological trigger for entering slow-wave (deep) sleep—by increasing blood flow to the extremities to dissipate heat. That thermoregulatory “cooling switch” is why this overlooked amino acid can support deeper, more restorative sleep rather than just making you feel sedated. “We ...

Does stress cause low testosterone in men? What science really shows

Does stress cause low testosterone in men? What science really shows

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Dec 05, 2025 · 14 min read

Chronic psychological stress is linked to lower morning testosterone in men, largely because sustained HPA-axis cortisol output can suppress hypothalamic–pituitary–gonadal (GnRH/LH) signaling and reduce testicular testosterone production. Here’s how to recognize the stress–low T feedback loop and what actually helps break it. “Stress and testosterone talk to each other all day long. Short bursts of ...

Semen retention meaning and the science behind the hype

Semen retention meaning and the science behind the hype

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Dec 05, 2025 · 12 min read

Semen retention is deliberate abstinence from ejaculation, and research suggests it doesn’t produce a sustained testosterone boost—one study found a modest rise around day 7 of abstinence that drifted back toward baseline despite continued retention. Here’s what the evidence says about how “holding semen” affects hormones, mood, sex, and long‑term health. “Your body is not ...

Normal range vs optimal: What labs actually mean for men

Normal range vs optimal: What labs actually mean for men

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Nov 29, 2025 · 13 min read

Many men are told their blood work is “normal” even though they feel tired, softer, and off their game. Understanding optimal vs normal lab ranges can turn a frustrating dead end into a clear plan to feel and perform better. “When a lab report says ‘normal’, it mostly means you’re not in immediate danger. It ...

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