Try Multi Tasking Yourself!
In general, multi-tasking can take place to an order of 8-fold concentration. A precise definition is "managing to do various activities to the desired level of concentration on each of these activities, thereby ensuring a desired output from each of these activities, either sequential or individual".
The number of concentration folds of multi-tasking performed by someone decides his/her excellence level in this subject. Typically an average person can do a 3 fold activity. By just linking a 4th fold, it is common for the activity sequence of the existing 3 folds to get impaired.
Try testing the number of folds you can handle.. Let's cheer up! Let us guide ourselves more once you test the above!