Multitasking

It has been quite a long time since I scribbled something here....
It was very busy time for last -4 months....

I was wondering how could people multitasking so efficiently? I know some of my friends who regularly write blogs, or do something other than routine work...
People are dancing in stage shows,signing in competitions, writing and releasing books....

Is it because of their exteme willingness and desire to pursue something additional(some how I feel like not calling it as passion) or is it another way of utilizing their free time????

I don't have answers but would like hear from somebody who might have tried exploring answers to above questions!! Any body listening??????????????