Why Does Time Seem to Speed Up as We Get Older? What Science Says

This feeling is surprisingly common

Almost every adult has said something like:

“I can't believe how quickly this year has gone.”

The sensation is not new. Scientists have studied the subjective experience of time for decades, and research generally supports the idea that many people perceive time as moving faster as they grow older — although the effect is relatively modest and varies considerably from person to person.

So why does it happen?

There is no single answer. Instead, researchers have proposed several explanations.

1. Life contains fewer truly new experiences

Think about childhood.

For a child, almost everything is new:

the first day of school;

new friends;

unfamiliar places;

new games;

learning to ride a bicycle;

discovering how the world works.

The brain has to process a huge amount of unfamiliar information.

As adults, however, many parts of our lives become predictable. We may follow the same route to work, see the same people, perform familiar tasks and repeat similar routines.

When experiences become repetitive, fewer moments stand out in memory.

And when we look back, a period filled with routine can seem surprisingly short.

Recent research has continued to explore the connection between repeated experiences, memory and our sense of when events happened.

2. Memory plays a major role in how we experience time

We don't always judge the passage of time while it is happening.

Very often, we judge it afterwards, by looking back at our memories.

Imagine two different years.

During the first year, you travel to several new places, meet new people, start a hobby and experience many unusual events.

During the second year, most days follow the same pattern.

When you look back, the first year may feel much longer and more substantial, even though both years contained exactly the same number of days.

Why?

Because the first year left behind more distinctive memories.

A 2024 study found evidence of a close relationship between memorability and perceived time: experiences that are more memorable can be perceived as lasting longer, while perceived duration can also influence how memorable an experience becomes.

3. Each year becomes a smaller part of our life

There is another explanation that sounds simple but is surprisingly intuitive.

For a five-year-old child, one year represents a huge portion of their entire life.

For a 50-year-old, one year represents a much smaller fraction.

This idea is sometimes described as the proportional theory of time perception.

It offers an appealing way of explaining why a year can feel enormous during childhood but much shorter later in life.

However, it is important to be careful: this is a theoretical explanation, not a proven law of human perception.

Researchers have proposed several different models, and there is still no single accepted explanation for why subjective time changes with age.

4. The brain becomes more efficient with familiar experiences

Our brains are constantly looking for patterns.

When we do something repeatedly, we no longer need to pay close attention to every individual detail.

Think about driving a familiar route.

The first time, you may notice every turn, building and traffic light.

After doing it hundreds of times, you can arrive at your destination and realize that you barely remember the journey.

The same thing can happen with everyday life.

When days are highly predictable, the brain may process them with less conscious attention.

As a result, many similar days can later blur together into one relatively small block of memory.

By contrast, unfamiliar experiences demand more attention and create more distinctive memories.

5. “Time flying” and “time dragging” are not actually the same thing

There is an important distinction here.

Have you ever been stuck in a boring meeting and thought:

“Why is time moving so slowly?”

Then suddenly you spend an entire weekend doing something enjoyable and wonder:

“Where did the time go?”

Both experiences can happen to the same person.

Research shows that attention, memory, the complexity of what we are experiencing and whether we are judging time in the moment or looking back on it can all influence our perception of duration.

So subjective time is not a simple internal clock that always runs faster or slower.

It is much more complicated.

Can we make life feel slower?

We cannot literally slow down time.

But we can potentially make our experience of life feel richer and more memorable.

Try something new

You don't have to travel around the world.

Small changes can be enough:

take a different route home;

cook a dish you've never tried;

learn a new language;

start a new hobby;

visit a place you've never been;

learn to play an instrument;

meet people outside your usual social circle.

New experiences give the brain something different to process.

And different experiences tend to create more distinctive memories.

Don't live entirely on autopilot

Routine is useful. It saves time and mental energy.

But a life made almost entirely of repeated routines can become difficult to distinguish in memory.

Paying attention to small details — a conversation, a walk, a meal, a new place — can make ordinary days more memorable.

Create memorable moments

You don't need extraordinary adventures every week.

A family dinner, a day trip, a birthday celebration, a new project or even a small personal achievement can become a memory marker.

When you look back later, these moments help give a period of life a clearer shape.

Does this mean that life really speeds up as we age?

No.

A second is still a second.

A minute is still a minute.

The physical passage of time has not changed.

What changes is our subjective experience of time.

Research suggests that age is only one factor. Attention, memory, routine, emotional experiences and the number of novel events in our lives can all influence how quickly or slowly a period seems to pass.

Interestingly, recent research also suggests that the simple idea “routine makes life feel faster” may not explain everything. A 2026 study found that remembered routine was associated with a faster perceived pace in one study, but other proposed explanations produced more complicated results. In other words, scientists are still working out exactly why our autobiographical sense of time behaves the way it does.

Perhaps the real secret is not age

Maybe the most interesting lesson is that the feeling of time speeding up is not simply about getting older.

It may also be about how much of our life feels new, memorable and distinctive.

When we continue learning, exploring, meeting people and trying unfamiliar things, our brains have more experiences to remember.

And when we look back, the past may feel richer and more substantial.

So perhaps the best way to “slow down” life isn't to find more hours in the day.

It is to give those hours something worth remembering.

Because the clock will keep moving at exactly the same speed.

But the way we experience our lives is something we can influence.