Do you shut down your Mac every time you stop using it?
If your answer is yes...well you should probably stop doing that, and I’m going to tell you
why right now.
In fact, if you are constantly shutting down your Mac, you might actually be doing it more
harm than good, and may even experience slowness and decreased performance.
It may also decrease the life of your battery if you have a laptop.
Now before we get into the video, you may have seen in a previous video of mine that
I often go over 3 weeks without restarting my Mac.
That’s right, no matter if I’m using a laptop or a desktop Mac like the M1 Mac Mini,
I almost never shut it down.
You see, shutting down does several things to your Mac.
Firstly, it flushes your RAM, or Random Access Memory of all data.
This can be good in some situations and I’ll touch on that a bit later, but more often
than not it’s completely unnecessary.
Flushing your RAM means that when you restart your computer, and start loading up programs
again, it’s going to take a lot longer than usual and they will not perform at optimal
levels until you’ve been using them for a while and relevant data is loaded back into
RAM.
After a restart, all the temporary data that was being stored in RAM and allows you to
multitask efficiently, such as program settings, background tasks, or webpages for example
need to be re-loaded.
macOS manages it’s RAM very efficiently, so there’s no need to constantly flush your
RAM, and you should do it (via a restart) ONLY if you are experiencing system slowness
or other issues.
Secondly, shutting down and then turning on a computer puts a small amount of stress on
the components, such as the internal drive, motherboard, and power supply.
When turning on a computer, a POST, or Power On Self Test sequence will run that tests
all components of the computer and checks for issues.
This test in itself is not stressful, but if it’s happening several times a day, every
day, for years and years, it may start to add up and increase wear on system components.
Thirdly, and perhaps the most noticeable result of constantly shutting down your computer
is that you need to wait for it to turn back on.
These days, especially with laptops featuring a Solid State Drive, or SSD, the restart process
is very quick.
But, nonetheless, it takes far longer than simply waking the computer from sleep.
Over the course of several years this could add up to days and days of lost time from
simply waiting until your computer turns off or turns back on again.
Let’s move on to why simply putting your Mac desktop or MacBook to sleep is better
for both you and your computer.
Firstly, it’s just so much faster.
I can open the screen of my MacBook Air and be instantly back to work, with all my draft
emails, web pages, Word documents, and other files open and ready to go.
When I’m done using my Mac, I make sure I either put it to sleep using the Apple menu
on a desktop Mac, or simply close the screen on my MacBook which will automatically put
it to sleep.
While sleeping, your Mac actually does quite a lot of really important stuff in the background.
For example, it will run maintenance tasks and scripts to clean up the operating system
and fix any minor software errors that may have occurred during your use.
It will also index files for searching.
This will happen every time you add, remove, rename, or move folders and files on your
Mac.
This is such an important process, especially if you often use spotlight to search your
computer for files.
Your Mac generally will not perform any of these tasks while it’s turned on and being
used, because these tasks may impact your usage.
If you are shutting down your Mac straight after you’ve finished using it, these tasks
may simply never have time to run, the end result being your Mac becomes slower and slower.
At the very least, it will result in increased start up times.
If you’ve set up Time Machine backups, your Mac will also try to perform these while sleeping.
In addition, every so often it will wake for a few seconds and connect to the network to
refresh emails and things like iMessages.
If you’re on a recent version of macOS, this all happens automatically.
There’s no need to go into the settings and change anything.
Pro tip, if you’re on a desktop Mac, you can set up a hot corner so that when you move
your mouse into a particular corner of the screen, it will automatically put the computer
to sleep.
Now don’t think that your Mac is going to be running all night and sucking up power
doing these tasks.
Generally it only takes a few minutes, and then your Mac goes into a deep hibernation,
drawing only a very tiny fraction of power from the battery for MacBooks, or the electricity
outlet for desktop Macs.
For reference, the difference between shutting down a Mac at the end of the day versus just
letting it sleep is barely $1 a year in electricity.
For MacBooks, there is another great benefit of sleep mode.
Apple laptops use lithium-ion batteries, which require a slow discharge to get the maximum
life span out of them.
Letting the laptop discharge, which is letting the battery run down, will keep the electrons
moving — which maintains the charge capacity and will prolong the life of your battery.
The battery will not do this if the MacBook is fully shut down.
I also recommend not leaving your MacBook plugged into it’s charger 24/7, but I’ll
save that for a separate video.
Lastly, the Mac operating system, otherwise known as macOS, is based on Unix.
Unix is world famous for extraordinary reliability and stability.
It runs perfectly for continuous periods of time and is able to perform a lot of internal
maintenance on it’s own software to remedy any issues and keep the system running effectively.
So how often should you shut down your Mac?
Personally, I only ever shut down my Mac if I’m experiencing issues on macOS.
For example programs freeze or crash, or my system is very slow.
9 times out of 10, a simple restart will fix whatever the issue is.
If I had to estimate, I probably only shut down my Mac every few weeks, and it’s usually
because I’ve installed a macOS or app update that requires a restart.
If I’m going to be travelling however, for example through an airport, or leaving my
MacBook at home for a few weeks and not using it, I will shut it down fully.
For shorter trips such as going from home to school, I’ll just leave it in sleep mode.
So there you have it, that’s everything you need to know about why you shouldn’t
shut down your Mac all the time.
It’s much better to simply let it sleep.
If you have any comments or questions about this video, please let me know down below
but apart from that, thanks for watching and I’ll catch you in the next one.