Have you ever sat at your desk intending to do work and found yourself re-reading the same sentence three times over? Have you opened your laptop with the intent to be productive, yet somehow managed to toggle through different web pages, check your phone, and wonder how you lost your focus?

You’re not being lazy, and chances are you’re not lacking motivation.

Most likely, your brain is overworked.

In our modern-day fast-paced world, mental exhaustion doesn’t always appear obvious. It manifests itself in slowed cognitive function, inability to concentrate, brain fog, and forgetfulness.

But here’s the best part – most of the factors that tire your brain are things you can control.

1. Constantly Switching Between Tasks

Your brain is not programmed to multitask on five different things.

Every time you change tasks between e-mails, Slack messages, social media posts, and your real work, your brain uses additional energy to adjust itself to the new task. The “cost of task switching” is what drains you of mental energy even though you have done very little.

Instead, try to allocate 30-60 minutes to work without notifications.

2. Sleeping Enough, but Not Sleeping Well

Just because someone sleeps between seven and eight hours does not necessarily mean that their brain is well-rested.

Inconsistent sleep quality, inconsistent bedtime, and checking one’s phone right before sleeping can interfere with proper brain rest and memory formation.

What to do instead? Stick to a regular sleep schedule and avoid screen time at least half an hour before going to bed.

3. Living on Coffee Alone

Coffee helps stimulate the mind for some time, but it cannot substitute for good nutrition, hydration, and sleep.

Relying on the consumption of caffeinated beverages multiple times a day will make you hyperactive for some time, then crash later. And the result of such a process will be even greater mental exhaustion.

This is what you should do instead – eat a nutritious breakfast along with drinking coffee.

4. Spending Every Free Moment on Your Phone

The brain doesn’t get much respite at all.

The constant barrage of videos, messaging, news, and notifications leaves the brain busy all the time. It even keeps processing information when one is supposedly “at rest.”

All this may exhaust one’s brain without one realizing it.

Rather do this: Take short breaks from technology during the day—just ten minutes will work fine.

5. Ignoring Stress Because "It's Normal"

Not all forms of stress can be noisy.

At times, stress can manifest as problems focusing, remembering minor things, being easily annoyed, or making difficult choices.

With chronic stress, your mind remains in a constant state of alert, which makes it really hard for you to pay attention to important things.

Try this rather than that: Add short breaks into your daily routine, such as a walk, breathing exercises, writing in a journal, or leaving your work station.

6. Dehydration

Your brain consists of almost 75% water.

Any level of dehydration may impair your attentiveness, memory capacity, mood, and other aspects of cognitive functioning.

The reason? People frequently confuse dehydration with fatigue.

Instead, try keeping a water bottle handy and drinking water throughout the day.

7. Sitting for Hours Without Moving

For your brain to work optimally, good blood flow is important.

Staying seated for long hours may lead to sluggishness and reduced mental alertness.

It doesn’t have to be an exercise, movement is all that is needed.

What you could try is getting up to stretch or taking a walk for about five minutes every hour.

8. Never Giving Your Brain a Real Break

A lot of us confuse distractions with resting.

Checking social media during the gaps in meetings doesn’t equal resting.

To process, your brain requires breaks that will help you recharge.

This is what I suggest you do instead: Step out, listen to some music, meditate, or just sit still without any new information.

Small Habits, Big Difference

Mental clarity does not come from a single great morning routine or a productivity technique.

It is achieved through small habits that help the brain daily.

In case you have had problems focusing in recent times, do not jump to conclusions that there is something wrong with you. Check out your daily habits first.

The reason why the brain seems exhausted is often not that you put in no effort at all but those little habits that take away your mental energy slowly.

It only requires a couple of adjustments to achieve mental clarity and focus.