Multitasking is a proven method for getting little done. It wastes time by slowing your progress down on every individual task.
Focusing on one task may make you actually complete it. It might give you the momentum to accomplishing another task. This can be avoided by multitasking.
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It is easy to constantly be burnt out while also accomplishing very little.
It takes years of practice. You have to build up habits where the line between work and time-wasting is practically blurred. You have to lack self-awareness and refrain from reflecting on your own shortcomings.
One study suggests that working out improves both productivity and satisfaction.
Staying in your chair and moving as little as possible is a sure way to feel exhausted at the end of the day.
A direct way to exhaust yourself:
To help you get nothing done while feeling exhausted, don't take breaks during unplanned work. Keep struggling.
Do tasks that don't directly accomplish anything. Email and Slack are great for this because neither are directly productive or relaxing. Check Twitter or read the news to get a general sense of anger or anxiety.
Many of the multitasking warnings actually refer to the concept of “task switching.” It refers to switching your attention from one thing to another.
Frequently flipping back and forth between different to-dos, is bad. It depletes your mental resources, wastes time, and will leave you feeling spread too thin.
Most of us spend our days jumping between tasks and tools.
In fact, most people average only 3 minutes on any given task before switching to something else (and only 2 minutes on a digital tool before moving on).