Source: http://blogs.hbr.org/bregman/2010/05/how-and-why-to-stop-multitaski.html
Great Article
References:
http://news.bbc.co.uk/2/hi/uk_news/4471607.stm
http://www.dailymail.co.uk/health/article-1205669/Is-multi-tasking-bad-brain-Experts-reveal-hidden-perils-juggling-jobs.html