I take it as an unsafe and time-sucking method and I suggest some alternate Mac tricks to speed up Mac.
1. Restart Mac Machine every so often.
Some Mac users don't shut down their machine every time they stop working on it. If you want to check that how long your Mac has been running since last reboot just Go to Utilities-> Terminal->type uptime and press enter. It will show you deration from last reboot.
The restart process helps Mac to clean old junk files which are one of the prominent reasons for slowing down Mac.
2. Keep your desktop clean
More the number of items on desktop the slower your Mac will run. So, keep your desktop clean and tidy.
3. Remove unnecessary data from your hard drive
Make sure that your Mac disk has enough free space to run the applications. A hard drive which is almost full will run more slowly. You can use Mac speed up tool like Stellar Speed Up Mac to delete duplicate files, remove unnecessary applications and other useless data.
4. Upgrade RAM
Greater the size of RAM more will be the speed of your machine.
5. Clean cache from your system.
You can delete cache either mannualy or using an automated tool to delete these unnecessary files.
6. Check the login items.
You can check and stop the unnecessary applications running in the background. For this, go to Accounts system preference, select your account, and click the Login Items and delete the unwanted items.
7. Check Activity Monitor.
Launch Activity Monitor (found in /Applications/Utilities), choose My Processes from the pop-up menu at the top of the window, and click the %CPU heading. Look at the top several items. This tells you what’s drawing most of your Mac’s attention.
8. Remove unnecessary applications
Many of us keep Mac programs which we don't need any more. Such applications, although unnecessary but eat too much of disk space. So, run unistalling application like Stellar speed up Mac and remove the applications which you don't need any more.
9. Switch to a faster hard drive.
The solid state drive (SSD) has higher rate of read/write operation than traditional hard disk drive (HDD) with spinning disk.
So, to be very frank, the above steps really work and it has been proved by the positive response I get from my readers.
