睡眠サイクル計算機 - 90分レム睡眠&最適就寝プランナー
90分の生体内ウルトラディアン睡眠周期(ノンレム・レム)に基づき、朝の睡眠慣性(だるさ)を起こさずに爽快に目覚めるための最適就寝・起床時刻を計算します。完全ブラウザ完結のプライベート健康コックピット。
Recommended Bedtimes for Your Alarm
Synchronized to complete 90-minute REM cycles. Catch the natural cortisol arousal wave at cycle boundaries.
Full replenishment of cellular ATP, extensive glymphatic brain waste clearance, and complete emotional consolidation.
The standard biological sweet spot for adults. Maximizes slow-wave physical restoration without morning grogginess.
Passable for short-term demanding periods. Preserves deep physical sleep but sacrifices later-morning cognitive REM stages.
High daytime fatigue risk. Significant REM sleep deficit will impair executive memory, verbal fluency, and emotional stability.