How to focus at work: evidence-based tactics

Educational content only — not medical advice. Nothing here is intended to diagnose, treat, cure or prevent any condition. Individual results vary; caffeine isn't suitable for under-18s, or those who are pregnant, breastfeeding or caffeine-sensitive. Check with your doctor if unsure.

The short answer: To focus at work, protect uninterrupted blocks for one task at a time, remove distractions before they reach you, and support the biology underneath — enough sleep, steady hydration and a small, measured dose of caffeine. Attention is finite, so the largest gains usually come from cutting interruptions rather than trying to muscle through them.

How to focus at work: single-task first

The most reliable answer to how to focus at work is also the least glamorous: do one thing at a time. What feels like multitasking is really rapid switching between tasks, and each switch carries a cost — your brain has to reload context, and part of your attention lingers on the task you just left. Knowledge work that demands concentration suffers most. Choose a single priority, put everything else out of sight, and let one task have your full attention before you move on.

Time-block your deep work

Give focus a container. Time-blocking — reserving a fixed slot on your calendar for one kind of work — and techniques such as the Pomodoro method, which alternates focused sprints (often around 25 minutes) with short breaks, both reduce the temptation to drift. The point is not the exact number on the timer; it is deciding in advance what you will work on and for how long, so you are not renegotiating your attention every few minutes.

Practise notification hygiene

You cannot concentrate while your phone and inbox are auditioning for attention. Before a deep-work block, silence non-urgent notifications, close the tabs you do not need, and put your phone out of arm's reach. Batching email and messages into set windows — rather than checking constantly — keeps interruptions from fragmenting your day.

Protect the biology: sleep, breaks and water

• Sleep. Focus starts the night before. The Sleep Foundation notes that sleep debt quietly erodes mental performance even when you do not feel especially sleepy, so consistent sleep is one of the highest-leverage focus tools you have.
• Breaks. Attention fades if you never let it recover. Short, genuine breaks away from the screen help you return sharper.
• Hydration. In a controlled study, Ganio and colleagues found that mild dehydration of about 1.5% body-water loss increased fatigue and errors on attention tasks in healthy young men. Keep water within reach.

The role of caffeine and L-theanine for attention

Caffeine is the best-studied focus aid there is, and it is often paired with L-theanine, an amino acid found in tea. Research on the two together has examined their effect on sustained attention: caffeine and L-theanine each support attention in healthy adults, and studies of the combination have looked at measures such as accuracy on attention tasks. Caffeine on its own can also come with an edge — restlessness, a racing feeling — and L-theanine is frequently studied for its smoothing role alongside it.

Dose and delivery matter. The FDA and Mayo Clinic both describe about 400mg of caffeine a day as generally safe for healthy adults, and a single brewed coffee can supply 113–247mg — so a smaller, measured amount is easier to keep in a comfortable range through a working day. Avysera Energy & Focus gum pairs 40mg of natural caffeine with 60mg of L-theanine plus vitamins B6 and B12 in each piece. Because you chew it, some caffeine absorbs through the lining of the mouth, which research on caffeinated gum shows reaches peak levels faster than a swallowed capsule — handy when you want to start a focus block. You can read more in our guide to caffeine and L-theanine, the complete guide to caffeine gum, and the ingredients and science page.

Keep caffeine within sensible limits — see how much caffeine per day — and, if it affects your sleep, keep it to earlier hours so it does not undo the rest your focus depends on.

Frequently asked questions

Does caffeine actually improve focus?

Caffeine is well studied for supporting alertness and attention in healthy adults, and it is often paired with L-theanine, which researchers have examined as part of the combination. It is a food product, not a treatment, and effects vary between people.

How much caffeine should I have for a workday?

Health authorities put the general ceiling at about 400mg a day for healthy adults. Spreading smaller, measured amounts is easier to manage than a few large coffees, and helps you avoid jitters or disrupted sleep.

What is the fastest single change for better focus?

Turn off notifications and work on one task at a time. Removing interruptions usually beats any productivity trick you can add on top.

Can I use caffeine gum instead of coffee?

Many people do. Avysera Energy & Focus gum gives a measured 40mg of caffeine with 60mg of L-theanine, is sugar-free and vegan, and absorbs partly through the lining of the mouth. As with any caffeine, it isn't suitable for under-18s, pregnancy, breastfeeding or caffeine-sensitivity.

Sources

• Kahathuduwa CN, et al. Effects of l-theanine-caffeine on sustained attention and inhibitory control. Scientific Reports. 2020. Nature
• Sleep Foundation. Sleep debt and catch-up sleep. 2024. Sleep Foundation
• Ganio MS, et al. Mild dehydration impairs cognitive performance and mood of men. British Journal of Nutrition. 2011. Cambridge Core
• U.S. Food & Drug Administration. Spilling the beans: how much caffeine is too much? 2024. FDA
• Mayo Clinic. Caffeine: how much is too much? 2024. Mayo Clinic
• Wickham KA, Spriet LL. Administration of caffeine in alternate forms. Sports Medicine. 2017. Springer
• National Institutes of Health, Office of Dietary Supplements. Vitamin B12 fact sheet for consumers. 2024. NIH ODS