Did you know that only 2.5% of people can multitask efficiently? The rest of us, however, although we may think we’re good at it, are not. A study done by the University of London found that multitasking during cognitive tasks actually decreases your IQ to someone who has stayed up an entire night with no sleep. Another study conducted by the Journal of Experimental Psychology: Human Perception and Performance showed that it lowers your brain’s efficiency as it forces it to change gears while switching between tasks. Multitasking divides our attention and requires brain power to switch back and forth. The more complicated the task, the longer it takes our brains to make the adjustments, lowering its performance as brain cells respond slower and slower each time.