Caffeine: Your Mac Needs Some Too
So pretty much all of us watch TV and movies on our computer or make presentations in front of large groups using a projector. It’s happened to all of us: your computer goes to sleep at precisely the wrong moment and screws everything up.
That’s why you use caffeine. It’s a small application that essentially consists of a cup of coffee on the menu bar. You click it, and your computer won’t go to sleep. Click it again and you turn it off.
The application even has a couple cool ways to customize how your computer goes to sleep so that it’s perfect.
With caffeine, you’ll never have your computer go to sleep at the wrong time.

