What is the primary function of sleep cycles?

The primary function of sleep cycles is indeed to balance light and deep sleep benefits. Sleep is structured in cycles that alternate between different stages, primarily non-REM (which includes light and deep sleep) and REM sleep. Each stage serves a distinctive purpose: light sleep allows for transitions into deeper sleep and is crucial for memory consolidation, while deep sleep is important for physical restoration and growth, immune function, and overall well-being. REM sleep, characterized by dreaming, also plays a critical role in emotional regulation and memory processing. Thus, the interplay of these stages within sleep cycles maximizes their respective benefits and contributes to overall health.