Here’s some research from The University of London. Glenn Wilson says, trying to perform just two simple tasks while sitting at your desk, such as texting and writing an email, could take 10 points off your IQ!
You may be thinking to yourself right now, “how bad could 10 points be?”. Well, some of us can’t afford to lose the 10 points, so consider this. Ten points off your IQ is the equivalent to losing one night’s sleep, or as Peter Bregman of The Harvard Business Review put it, "twice the equivalent of smoking marijuana."
Are you sure you still want to multi-task?