The Science Behind Sleep Cycles (REM vs Non-REM)
Your brain cycles through sleep stages like a nightly symphony. Here's how to harmonize with them.
1. Light Sleep (Stages 1-2)
Your muscles relax, and brain waves slow. This phase prepares you for deep sleep.
Pro Tip: Waking during light sleep = less grogginess.
2. Deep Sleep (Stage 3)
Critical for physical recovery. Blood pressure drops, and growth hormone releases.
3. REM Sleep (Dream Stage)
Brain activity spikes, eyes dart rapidly. Essential for memory and mood regulation.
Key Takeaway
Aim for 4-6 complete cycles (each ~90 minutes) per night.