Context switching happens when you jump between tasks.
- You're on call, but at the same time, you're working on a document.
- You're watching a movie and checking your mobile.
- You're writing an email and talking if your coworker.
It kills productivity.
It happens when you do multitasking.
Each extra task or "context" you switch eats up 20-80% of your overall productivity.
- Jory MacKay. Context switching: Why jumping between tasks is killing your productivity (and what you can do about it)