455. Why does time start flying in our 20s?

Time perception accelerates with age primarily due to a reduction in novel experiences and the way the brain consolidates memories. While childhood is marked by constant newness that creates distinct, expansive memories, adulthood often falls into monotonous routines that cause time to blur. The digital age further compounds this effect; constant scrolling through short-form content creates cognitive inertia and prevents the brain from forming meaningful, distinct memories, leading to a phenomenon where time feels compressed. To counteract this, individuals can "microdose" novelty by introducing small changes to daily routines, leverage behavioral contagion by surrounding themselves with active peers, and document life through offline methods like journaling. Ultimately, gratitude and a conscious effort to prioritize fresh, meaningful experiences serve as the primary antidotes to the feeling that life is passing too quickly.