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Brain, Nerves & Mental Performance
Our nervous system is the control center for thinking, feeling, and acting. In this category, you'll learn how nerve impulses, neurotransmitters, and neurobiological processes influence mental balance, concentration, and well-being. Whether you're experiencing exhaustion, stress, irritability, or neurological symptoms, you'll find sound knowledge and practical ways to strengthen your nervous system and holistically promote your mental health.


(NEWS) Combined training improves sleep quality in overweight individuals: Network meta-analysis
Poor sleep and excess weight often reinforce each other – creating a vicious cycle of fatigue, cravings, and reduced physical activity. A new network meta-analysis of 17 randomized controlled trials with 927 adults now shows that combined endurance and strength training most reliably improves subjective sleep quality, closely followed by strength training alone. The most effective programs typically lasted 8 to 12 weeks with 3 to 5 sessions per week. Important: More isn't alw

Aferdita
6 days ago6 min read


(NEWS) Progressive muscle relaxation: Meta-analysis shows strong effects on sleep & anxiety
A 2026 meta-analysis (31 RCTs, 2,277 participants) shows progressive muscle relaxation significantly improves sleep quality and reduces anxiety.

Norman Reffke
Mar 234 min read


(NEWS) Nature-based interventions & mental health: Umbrella review shows moderate evidence
28 meta-analyses, 344 studies – Nature-based interventions (forests, parks, gardens) moderately reduce tension, fatigue & negative affect; 89% low credibility

Sophie
Mar 146 min read


(NEWS) Rhodiola rosea & mental energy: Meta-analysis shows effect on fatigue & focus – What the research says
48 studies, 4,200 participants – 200-600 mg Rhodiola rosea daily reduces fatigue by 32%, improves mental energy by 24%, enhances focus. Faster onset than Ashwagandha.

Norman Reffke
Feb 235 min read


(NEWS) Creatine & cognitive performance: Meta-analysis shows effect on memory & thinking speed
26 studies, 1,800 participants: 5g creatine daily improves working memory by 18%, processing speed by 12%, boosts brain energy.

Aferdita
Feb 205 min read


(NEWS) Sleep hygiene & melatonin: Meta-analysis shows effect on sleep onset time & sleep quality
41 studies, 3,200 participants: Optimal sleep hygiene + 0.5-3mg melatonin reduces sleep onset by 42%, improves deep sleep by 28%.

Norman Reffke
Feb 175 min read


(NEWS) Omega-3 & Brain Health: Study shows effect of EPA/DHA on cognitive performance
56 studies, 4,200 participants: Omega-3 (EPA/DHA 1,000-2,000mg) improves cognitive performance by 18%, increases hippocampus volume by 4.2%. Strengthen brain health.

Norman Reffke
Feb 145 min read


(NEWS) Caffeine timing for focus: Study shows optimal time window for cognitive performance
28 studies, 1,800 participants: Caffeine 90-120 min after waking increases focus by 24%, reduces cortisol crash, improves sleep.

Aferdita
Feb 93 min read


Sport & Orgasm – How Your Hormones Control Performance, Desire and Recovery
Imagine you've just finished an intense workout – your muscles are burning, sweat is dripping from your forehead, and you feel simultaneously exhausted and euphoric. A few hours later, you experience a passionate moment of intimacy with your partner. What you might not know is this: these two seemingly different experiences trigger remarkably similar biochemical cascades in your body. Both during exercise and orgasm, the same neurotransmitters are released, similar hormone co

Norman Reffke
Aug 8, 202520 min read


Sudden loss of consciousness – what really lies behind it and how you can prevent it
Imagine you're exercising, enjoying dinner, or experiencing an intense moment of intimacy – and suddenly, everything goes black. Seconds...

Norman Reffke
Jul 24, 20254 min read


Why does my muscle suddenly twitch? – Understanding the biochemical causes of muscle twitching
Introduction You know that feeling? Suddenly, your eyelid or thigh twitches – without warning. For a brief moment, it feels strange,...

Norman Reffke
Jul 21, 20254 min read
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