The Apple Blog recently pointed to a very useful application if you’re constantly frustrated by your Mac going into sleep mode while you’re trying to watch a movie. Caffeine is a free application that allows you to control when your screen can and can’t go to sleep.

Download and install the application to start enjoying movies, tv shows, and youtube without having to worry about your monitor dimming or turning off. Caffeine installs a menu item that allows you to quickly adjust your monitor sleep settings. Be sure to set it back to sleep when you finish the video.. You want to make sure you save every penny on those electric bills.

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