L-theanine and key nutrients for a stable mental focus
A study in Food science & nutrition in 2025 reviewed how L-theanine, an amino acid in tea, protects the brain against stress and mental toll. The authors analysed human studies and experimental models and observed consistent effects on stress management, cognitive performance and recovery after neuronal damage. This matters because […]
Cramps, tiredness and silent stress
There are days when the body doesn’t protest with a big symptom, but with small signs that repeat themselves. You feel more tired when climbing stairs, you sleep and still wake up feeling heavy, and at night there is muscle tightness, twitching eyelids or that typical cramp that cuts your rest just when you were starting to get tired.
Low heart rate variability (HRV) and fatigue: a sign many people ignore
You wake up, look at the clock, and there it is again, low HRV, “body battery” in red, and a strange feeling of tiredness that doesn’t fit in with your hours of sleep. The most irritating thing is that, even so, the day demands performance, meetings, training, family, and you end up pushing your body with coffee and sheer willpower. […]
