How to Focus: 12 Science-Backed Ways to Concentrate Better

To focus better, start with the basics that research supports most: get enough sleep, do one task at a time, put your phone out of sight, work in set blocks with short breaks, and move your body during the day. Focus is not a fixed trait. It rises and falls with sleep, stress, distraction, hydration and how your day is set up, which means small changes to those inputs can make a real difference. This guide covers 12 science-backed ways to concentrate better, how to focus at work and while studying, why focus slips, and when it is worth talking to a doctor.

It is educational, not medical advice.

Key Takeaways

• Sleep comes first: in a meta-analysis of 70 studies, short-term sleep loss had its largest effect on lapses in simple attention (Lim and Dinges, 2010).
• Switching tasks costs time, and the cost grows as tasks get more complex (Rubinstein et al., 2001).
• Brief breaks help you stay on task: in a lab study, short, rare breaks from a long task prevented the usual drop in performance over time (Ariga and Lleras, 2011).
• Mindfulness training for two weeks reduced mind wandering and improved working memory in a randomized trial (Mrazek et al., 2013).
• Caffeine and L-theanine together improved attention switching and reduced distraction in small trials (Owen et al., 2008).

What Focus Is, and Why It Slips

Focus, or sustained attention, is your brain's ability to keep working toward one goal while ignoring everything else competing for it. It draws on a limited supply of mental resources, so anything that drains them, such as poor sleep, stress, hunger, dehydration or a constant stream of notifications, makes it harder to hold attention.

Mind wandering is also normal. When researchers used a smartphone app to sample people's thoughts through the day, people were thinking about something other than what they were doing almost as often as they were thinking about the task in front of them, and they were usually less happy when their minds wandered (Killingsworth and Gilbert, 2010). The goal is not to stop your mind from ever drifting, but to notice sooner and come back faster.

How to Focus: 12 Science-Backed Ways

1. Protect your sleep

Sleep is the single biggest lever. A meta-analysis of 70 articles covering 147 cognitive tests found that short-term sleep loss hurt simple attention, complex attention, working memory and processing speed, with the largest effect on lapses in simple attention (Lim and Dinges, 2010). Aim for a regular bedtime and wake time. Our guide on how to sleep better covers sleep quality as well as quantity.

2. Do one thing at a time

Multitasking is really task switching, and every switch has a cost. In four experiments, switching between tasks slowed people down, and the time cost grew as the rules of the tasks got more complex (Rubinstein et al., 2001). Pick one task, close what you do not need for it, and finish a clear chunk before you move on.

3. Remove distractions before you start

It is easier to avoid a distraction than to resist it. Put your phone in another room or in a drawer, turn off notifications you do not need, close extra browser tabs and email, and let people know when you are not available. Noise-cancelling headphones or steady background sound can help in a busy space.

4. Work in focused blocks with short breaks

Attention on a long, unchanging task tends to fade over time. In a lab study, people who took brief, occasional breaks from a long vigilance task did not show the usual decline in performance, while those who worked straight through did (Ariga and Lleras, 2011). A simple routine is to work for a set block, for example 25 to 50 minutes, then take a short break to stand, stretch or look away from the screen.

5. Decide on the next step before you begin

Vague tasks invite procrastination. Write down the one thing you will do in the next block, as a specific action ("draft the first two sections of the report") rather than a topic ("work on the report"). A short list for the day keeps you from spending focus deciding what to do next.

6. Notice when your mind wanders, and come back

Because mind wandering is so common, the skill that matters is catching it. When you notice you have drifted, do not criticize yourself. Note the stray thought on paper if it is important, then return to the task. Each return is practice.

7. Train your attention with mindfulness

Mindfulness practice trains exactly that skill. In a randomized trial, people who took a two-week mindfulness course improved their working memory and reading comprehension scores on a graduate entrance exam and showed less mind wandering during testing (Mrazek et al., 2013). Even 10 minutes a day of paying attention to your breath is a place to start. Our guide to mindfulness for focus walks through simple practices.

8. Move your body

A single session of exercise gives a small but real lift to cognitive performance. A meta-analysis of 79 studies found small positive effects during exercise, immediately after it and after a delay, with larger effects possible depending on the type, intensity and length of exercise (Chang et al., 2012). A brisk walk before a demanding task, or between work blocks, is an easy way to use this.

9. Spend time outside

Nature seems to restore attention. In two experiments, walking in a park or even viewing pictures of nature improved performance on directed attention tests compared with urban settings (Berman et al., 2008). Take a break outdoors or work near a window with a view of trees when you can.

10. Drink enough water

Even mild dehydration can blunt concentration. In a controlled study of 26 young men, losing about 1.6% of body weight through fluid loss increased errors on a vigilance task, slowed working memory and raised fatigue and tension (Ganio et al., 2011). Keep a glass or bottle of water within reach while you work.

11. Time your caffeine

Caffeine reliably helps alertness. A review found that doses from about 40 mg to 300 mg improved alertness, vigilance, attention and reaction time, with less consistent effects on memory (McLellan et al., 2016). Keep it to the morning and early afternoon, because caffeine late in the day can cut into the sleep your focus depends on.

12. Pair caffeine with L-theanine

L-theanine, an amino acid found in tea, is often paired with caffeine for smoother focus. In one trial of 27 people, 100 mg of L-theanine with 50 mg of caffeine improved speed and accuracy on an attention switching task and reduced distraction during a memory task (Owen et al., 2008). In another trial of 44 young adults, 97 mg of L-theanine with 40 mg of caffeine improved task switching accuracy and alertness and reduced tiredness (Giesbrecht et al., 2010). Our guide to L-theanine and caffeine covers ratios and timing.

Quick Fixes vs Daily Habits

When you need focus now	Habits that build focus over time
Put your phone in another room	A regular sleep and wake time
Close every tab you do not need	Daily movement, ideally outdoors
Write the next step on paper	A few minutes of mindfulness practice
Set a timer for one work block	Caffeine kept to the morning
Drink a glass of water and take a short walk	Planning tomorrow's first task the night before

A steady start helps too; our morning routine checklist covers the first hour of the day, from daylight to picking your most important task.

How to Focus at Work

Put your hardest task in the time of day you feel sharpest, which for many people is the morning. Block that time on your calendar, set your status to busy and check email and messages at set times rather than as they arrive. If you work from home, keep a set place for work and a clear start and finish to the day, so your brain links that spot with focus. Short walks between meetings work as the breaks described above.

How to Focus While Studying

Study in one place with your phone out of reach, and break the material into small goals for each session. Testing yourself, by closing the book and writing down what you remember, keeps your mind engaged better than rereading. Take a short break between blocks and stop well before bed, because sleep is when much of what you learned is consolidated. For more on memory, see our guide to memory techniques for sharper recall.

Dopamine plays a part in motivation, effort and alertness; our guide to what dopamine is explains how.

Why Can't I Focus?

If focus is harder than usual, look at the common causes first:

• Short or broken sleep over several nights.
• Stress and worry, which pull attention toward the problem. Our guide to stress, mood and the nervous system covers this side.
• Constant interruptions from notifications, open-plan offices or family life.
• Skipped meals or long gaps between them, and not drinking enough water.
• Too much caffeine, or caffeine late in the day that disturbs sleep.
• Brain fog after illness or during hormonal changes. Our brain fog guide explains the causes and what helps.

Diet plays a longer-term role too; see brain foods for what studies found.

Can Supplements Help You Focus?

Supplements work best on top of the habits above, not instead of them. The pairing with the most direct research on attention is L-theanine with caffeine, described in step 12. Other ingredients studied for focus and memory include bacopa, lion's mane and rhodiola; our guide to the best supplements for focus and concentration ranks them by the strength of the evidence, and our guide to L-theanine vs L-tyrosine compares two popular choices.

Bacopa is one of the slower options, usually given 8 to 12 weeks in trials; our guide to bacopa monnieri benefits covers what those trials measured.

Our Clarity Capsules combine lion's mane, bacopa, rhodiola, maca, epimedium and huperzine A in a caffeine-free morning serving, and our Theanine Nasal Spray provides 36 mg of L-theanine per two-spray serving. Our cognitive health and mental clarity guide brings the topic together. You can browse more options in our Focus collection.

When to See a Doctor

Safety note: talk to a doctor if trouble focusing is severe, lasts for weeks despite good sleep and habits, or affects your work, studies or safety, for example while driving. Ongoing problems with attention can be linked to conditions such as ADHD, depression, anxiety, sleep apnea, thyroid problems or anemia, and some medicines can affect concentration. Get urgent care for sudden confusion, trouble speaking or weakness on one side of the body. Check with your doctor before taking a new supplement if you are pregnant, breastfeeding or taking medication.

Sources

• Lim J et al. A meta-analysis of the impact of short-term sleep deprivation on cognitive variables. Psychological Bulletin, 2010. PubMed
• Rubinstein JS et al. Executive control of cognitive processes in task switching. Journal of Experimental Psychology: Human Perception and Performance, 2001. PubMed
• Ariga A et al. Brief and rare mental "breaks" keep you focused: deactivation and reactivation of task goals preempt vigilance decrements. Cognition, 2011. PubMed
• Mrazek MD et al. Mindfulness training improves working memory capacity and GRE performance while reducing mind wandering. Psychological Science, 2013. PubMed
• Owen GN et al. The combined effects of L-theanine and caffeine on cognitive performance and mood. Nutritional Neuroscience, 2008. PubMed
• Killingsworth MA et al. A wandering mind is an unhappy mind. Science, 2010. PubMed
• Chang YK et al. The effects of acute exercise on cognitive performance: a meta-analysis. Brain Research, 2012. PubMed
• Berman MG et al. The cognitive benefits of interacting with nature. Psychological Science, 2008. PubMed
• Ganio MS et al. Mild dehydration impairs cognitive performance and mood of men. The British Journal of Nutrition, 2011. PubMed
• McLellan TM et al. A review of caffeine's effects on cognitive, physical and occupational performance. Neuroscience and Biobehavioral Reviews, 2016. PubMed
• Giesbrecht T et al. The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness. Nutritional Neuroscience, 2010. PubMed

Frequently Asked Questions

How can I focus better quickly?

Put your phone out of sight, close everything you do not need, write down the one next step, drink some water and set a timer for a single work block. A short brisk walk first can also help.

How do I train my brain to focus?

Practice. Work in timed blocks, notice when your mind wanders and bring it back, and try a few minutes of mindfulness each day; a two-week mindfulness course reduced mind wandering in a randomized trial.

Why can't I focus even when I try?

Poor sleep, stress, interruptions, dehydration and too much caffeine are the most common reasons. If the problem is severe or lasts for weeks, talk to a doctor.

How long can a person focus at one time?

It varies by person and task, and attention on a long, unchanging task tends to fade. Working in blocks of about 25 to 50 minutes with short breaks helps many people stay on task.

Does music help you focus?

It depends on you and the task. Steady background sound or music without lyrics suits some people, while others focus best in quiet, especially for reading or writing.

What should I eat or drink to focus?

Regular meals, enough water and caffeine in moderation earlier in the day are the basics. Caffeine paired with L-theanine improved attention switching in small trials.

How do I focus on studying when I am tired?

Take a short walk or get some daylight, drink water and study in short blocks. If you are tired most days, sleep is the real fix, because sleep loss hits attention hardest.

Can supplements improve focus?

Some ingredients, such as L-theanine with caffeine, have been studied for attention. Supplements work best alongside sleep, movement and fewer distractions.

These statements have not been evaluated by the Food and Drug Administration. This content is for education and is not medical advice. Our products are not intended to diagnose, treat, cure or prevent any disease. Talk with a healthcare provider before starting a new supplement if you are pregnant, breastfeeding or taking medication.