
You’ll now see your amount of free RAM go up. In MacKeeper, select Memory Cleaner from the left-side menu.If you’re preventing your Mac from sleeping, it might be a good idea to occasionally clear out its RAM. There are few different ways to turn off sleep mode on a Mac. Thankfully, it’s fairly easy to prevent your Mac from sleeping. Sometimes, you want to stop your Mac from sleeping - like when you’re watching a long movie or downloading lots of large files. This handy little feature helps to save energy, but there are also times when it’s not so useful.

Leave your Mac alone for long enough, and it will go into sleep mode.
