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# catatan teknis, sejak 2001

Caffeine Reduces Deep Sleep

Caffeine lowers slow‑wave sleep depth as measured by EEG, even when total sleep duration remains unchanged. Electrical activity in the brain shows reduced slow‑wave activity after caffeine intake. People who need caffeine for alertness should be aware that it can compromise restorative sleep quality. The effect varies by dose, timing, and metabolism, so results differ across individuals. sumber: sciencedaily.com/260922005719.htm my other side: setyadi.com

Bird Feeding Boosts Well‑Being

2026-09-23 · #Sains

A study led by Virginia Tech found that 95% of participants reported a positive effect on their well‑being from feeding and watching birds, compared with 55% for other life events. The research used a standard mental‑well‑being questionnaire over a six‑month period and asked respondents to reflect on how the activity influenced them. The authors identified three key pathways: emotions, engagement, and a sense of meaning.

The results suggest that a simple, low‑cost activity can boost mood and reduce stress for many people. However, the study relies on self‑report from volunteers who already enjoy birdwatching, so it may not apply to the general population. Anyone who wants to feed birds should still follow best‑practice guidelines to minimise risks to wildlife.

sumber: futurity.org

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