ELI5: Explain Like I'm 5

Nostalgia

Nostalgia is when we feel happy and excited about memories from long ago. It usually involves memories from our childhood, like our favorite toys or activities. People experience nostalgia when they remember or think about a past time that made them feel good and happy. Sometimes nostalgia can come from music, movies, books or places we used to visit. Our minds can often trick us into feeling like the past was better than it actually was, which makes us feel warm and fuzzy inside.