Put Your Mac to Sleep
Super easy, super fast.
When you’re using MacBook, it’s pretty obvious, just close the lid. When you’re using external monitor and keyboard and your MacBook is already closed or when you’re using iMac, you can use this simple shortcut: ALT/OPT + CMD + Eject (⌥ + ⌘ + ⏏). This is way easier than to navigating to in the top bar and selecting the Sleep command.