When first fall asleep enter into?

When you first fall asleep, you enter a stage known as NREM (Non-Rapid Eye Movement) sleep, specifically the initial stage called N1. This phase is characterized by light sleep, where your body begins to relax, and brain activity slows down. As you progress, you move into deeper stages of NREM sleep, which are important for physical restoration and memory consolidation. Eventually, you cycle into REM (Rapid Eye Movement) sleep, which is associated with vivid dreaming and cognitive processing.