https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's tech blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, distributed training, and data engineering. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Mon, 15 Jun 2026 00:00:00 GMT https://www.youngju.dev/blog/culture/2026-06-15-sleep-health-shift-screen-circadian.en https://www.youngju.dev/blog/culture/2026-06-15-sleep-health-shift-screen-circadian.en This guide lays out the recommended sleep duration for adults and the basic principles of sleep hygiene, then covers caffeine half-life and cutoffs, the debate over evening screen use, and the role of circadian rhythm and morning light in a balanced way. It also offers practical advice on handling overtime and shift work, a general view of coping with insomnia, and signs that it is time to consult a professional. Mon, 15 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) sleepsleep-hygienecircadian-rhythmcaffeineshift-workoffice-health https://www.youngju.dev/blog/culture/2026-06-15-sleep-health-shift-screen-circadian.ja https://www.youngju.dev/blog/culture/2026-06-15-sleep-health-shift-screen-circadian.ja 成人に推奨される睡眠時間と睡眠衛生の基本原則を整理し、カフェインの半減期とカットオフ、夜の画面使用をめぐる議論、概日リズムと朝の光の役割をバランスよく扱います。残業や交代勤務への対応、不眠への対処の一般的な見方、不眠が続くときの専門家相談のサインまで、実践を中心に案内します。 Mon, 15 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) sleepsleep-hygienecircadian-rhythmcaffeineshift-workoffice-health https://www.youngju.dev/blog/culture/2026-06-15-sleep-health-shift-screen-circadian https://www.youngju.dev/blog/culture/2026-06-15-sleep-health-shift-screen-circadian 성인에게 권장되는 수면 시간과 수면 위생의 기본 원칙을 정리하고, 카페인 반감기와 컷오프, 저녁 화면 사용 논쟁, 일주기 리듬과 아침 햇빛의 역할을 균형 있게 다룹니다. 야근과 교대근무 대응, 불면 대처의 일반적 관점, 지속 불면 시 전문가 상담 신호까지 실천 중심으로 안내합니다. Mon, 15 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) sleepsleep-hygienecircadian-rhythmcaffeineshift-workoffice-health