Multitasking seems like a great way to get a lot done at once. But research has shown that our brains are not nearly as good at handling multiple tasks as we like to think they are. In fact, some researchers suggest that multitasking can actually reduce productivity by as much as 40%. 

What is it that makes multitasking such a productivity killer? It might seem like you are accomplishing multiple things at the same time, but what you are really doing is quickly shifting your attention and focus from one thing to the next. Switching from one task to another makes it difficult to tune out distractions and can cause mental blocks that can slow you down.