The tool you will use is called Insomnia . It free, open source, and allows you to set how long your MacBook should stay awake. It will override the sleep settings, even when the lid is open, meaning it not only useful for MacBooks. You just start your task, whether youre downloading a huge file or running a long AI workflow in the background, close the lid, and leave it to finish. Since Insomnia is not available on the App Store, installing it requires some Terminal know how. Luckily, it not a...