Time speeds up with age - what actually happens to the brain

As people age, time seems to accelerate, though the length of a day remains unchanged. This is linked to perception and memory formation: for a child, a year is a fifth of their life, while for a 50-year-old, it is a fiftieth. The number of new events also matters: childhood is filled with first impressions, while adult life is dominated by predictable routines that create fewer vivid memories. A day with new events feels long, while monotonous weeks pass unnoticed. Making a year feel longer is possible through travel, learning, and new hobbies.

As people age, many feel that time accelerates: months pass more quickly, and another year ends almost as soon as it begins. However, the length of a day does not change—the reasons for this sensation are linked to how perception and memory work. One explanation involves the proportion of life a given period represents. For a five-year-old child, a year equals a fifth of their entire life, while for a 50-year-old, it is only a fiftieth. Thus, the same 12 months can feel subjectively very different. But it is not just about age and proportions. The number of new events also plays a major role. Childhood is filled with first impressions, new acquaintances, trips, skills, and other events that the brain stores as distinct memories. In adult life, daily routines become more predictable. Work, a familiar commute, household chores, and similar weekends create fewer vivid memories. When a person looks back after several months, such a period can seem much shorter. Yet there is a peculiar paradox. A day filled with new events can feel long in the moment and remain rich in memory. Monotonous weeks, on the other hand, can pass almost unnoticed. Attention also influences the subjective perception of time. A few minutes of waiting can feel long if a person constantly watches the clock. During an engaging activity, the same person may not notice an entire hour passing. With age, life routines change. Work, household duties, and constant task-switching leave less time for new experiences, and repetitive events begin to merge in memory into one similar period. Subjectively, making a year feel longer is possible through new impressions. Travel, unfamiliar routes, learning, new hobbies, and even small changes to daily routines create additional memories, making the lived period seem richer in retrospect.