How to improve your attention span, according to the research

If you want to know how to improve your attention span, start with a more hopeful fact than you may expect: attention is not a fixed trait you are born with a set amount of. It is a trainable capacity, like strength or stamina. That matters, because it means the shortened, restless focus so many people now report is not permanent damage. It is the result of how the modern day is structured, and structure can be changed.

What actually happened to your focus

The numbers are striking. The informatics researcher Gloria Mark spent two decades measuring how long people stay on a single screen before switching. In 2004 the average was about two and a half minutes. By 2021 it had fallen to roughly 47 seconds.^[1] We did not get worse at attention as people. We built an environment that rewards switching, then practised switching thousands of times a day until it became automatic.

That is the bad news and the good news in one sentence. If a short attention span is a learned habit, it can be unlearned, because the brain that learned it is plastic.

Attention is trainable

The clearest evidence that focus responds to practice comes from training studies. In one controlled experiment, participants who completed a two-week course of short daily attention and mindfulness sessions showed measurable improvements in working-memory capacity and reading-comprehension scores, and reported significantly less mind-wandering, compared with a control group.^[2] Two weeks. Small, regular sessions.

The reading brain tells the same story over a longer horizon. The cognitive neuroscientist Maryanne Wolf describes the deep-reading circuit, the network of brain regions that lets you follow a long, complex argument, as something that is built through practice and maintained through use.^[3] It is not given. Skim all day and the circuit weakens. Read deeply and regularly and it holds. The capacity follows the behaviour.

How to rebuild it

The principle behind every method below is the same: deliberately practise staying with one thing while tolerating the urge to switch. That urge is the rep. Sitting with it is the exercise.

Read on paper, daily. Sustained reading is the closest thing to a complete attention workout, because it demands continuous focus and a physical book cannot interrupt you. Start with a length you can actually hold, even ten minutes, and extend it. If you have lost the habit entirely, a paper book and a fixed time of day is the whole method.

Single-task in blocks. Pick one task, put the phone in another room, and work on only that thing for a set stretch. Twenty-five minutes is a common starting block. The skill you are building is not the work itself, it is staying when your mind reaches for something else.

Walk without audio. A walk with no podcast and no music is undirected attention practice. The mind wanders, returns, wanders again, and that gentle, unforced range is exactly what constant input has crowded out.

Reduce the background switching. Turn off non-essential notifications, keep one tab open instead of twenty, and stop checking the phone in the small gaps. Every avoided switch is a rep in the right direction.

Protect sleep and movement. Attention is a biological function before it is a psychological one. Tired, sedentary brains focus worse. None of the practice above lands well on no sleep.

The honest timeline is weeks, not days, and progress is uneven. But the direction is reliable: practise sustained attention and it returns. That is the whole premise of How to Be Bored Again, which treats focus not as a thing you have lost but as a muscle you can use again.