How to stop Mac from sleeping? 4 Ways explained!

You may have noticed your Mac’s screen turns off when you are not using it for a few minutes. The macOS goes to sleep when inactive to save its battery and increase power efficiency. But if you are doing any continuous task, you may not want it to sleep. Here, I will discuss how to stop Mac from sleeping.

Why should you prevent Mac from sleeping?
How to stop Mac from going to sleep using Battery Settings
Change Lock Screen settings to prevent Mac from sleeping
How to prevent Mac from sleeping using Terminal
Use a third-party app to turn off Sleep mode on your Mac

Why should you prevent Mac from sleeping?

There might be many reasons why you need to stop Mac from sleeping. There are instances such as:

While running long tasks: When you download long files on a Mac, you must prevent the Mac from sleeping to finish the task without interruption.
Giving presentations: Imagine your Mac suddenly falls asleep while giving a presentation. Keeping the Mac screen from sleeping is always better to ensure your presentation runs smoothly.
Remote access: For those accessing their Mac remotely, it is essential to keep the Mac awake since if it falls asleep, you will have to set up remote access on the Mac again.
Streaming music or video: I get irritated when my Mac screen goes blank while watching videos. Hence, it is the best way to make it stay awake the whole time.

Now that you know the need to stop Mac from sleeping, let’s look at how you can do it.

Since keeping the Mac screen awake all the time is a system thing, let’s look at various ways you can do that. While the steps here are to make Mac never fall asleep, you can tailor the settings to your preference.

How to stop Mac from going to sleep using Battery Settings

Go to System Settings.
Go to Battery from the left pane.
Click the drop-down menu next to Low Power Mode → Select Never.
Now, click Options.
Click the drop-down menu next to Wake for network access → Choose Always.
Toggle on Prevent automatic sleeping on power adapter when the display is off.
Hit Done.

Change Lock Screen settings to prevent Mac from sleeping

Go to System Settings → Lock Screen.
Click the drop-down menu next to Start Screen Saver when inactive → Choose Never.
Click Turn display off on battery when inactive → Choose Never.
Select Turn display off on power adapter when inactive → Choose Never.

How to prevent Mac from sleeping using Terminal

Apart from System Settings, you can also keep your Mac awake using Terminal.

Open Terminal using Spotlight search.
Type caffeinate and hit the Return key.
This will keep Mac awake until the Terminal session closes, even if you close the lid.
Apart from that, you can use the following commands:
- caffeinate -d: Prevent Mac display from sleeping
- caffeinate -i: Prevent the system from idle sleeping
- caffeinate -m: Prevent the disk from going idle
- caffeinate -s: Keep Mac awake while plugged into AC power
- caffeinate -t 1800 &: Here, 1800 is the time in seconds your Mac will stay awake.
  You can set any time of your choice.

To stop the Terminal running, hit the close button and select Terminate.

Use a third-party app to turn off Sleep mode on your Mac

Apart from the abovementioned steps, you can also use third-party apps to stop your Mac from sleeping. Of course, you can use any app of your choice, but here we are using Amphetamine.