1. Understanding Sleep Cycles
Your sleep follows a predictable pattern of 90-minute cycles, each containing different stages.
Stage 1 (Light Sleep): The transition between wakefulness and sleep, lasting 5-10 minutes.
Stage 2 (Light Sleep): Body temperature drops and heart rate slows. This makes up about 50% of total sleep.
Stage 3 (Deep Sleep): The most restorative stage where tissue repair, immune function, and energy restoration occur.
REM Sleep: Where most dreaming happens. Critical for memory consolidation and emotional processing.
Pro tip: Use our Sleep Calculator to wake up at the end of a cycle, not in the middle, to feel more refreshed.