For the 46-year-old Mark Doyle the boundary of being sleepy and staying awake is blurred. This goes to say that he performs activities like cooking and cleaning in his sleep. But what will amuse you the most is to know that this man recently bought toiletries worth Rs 10000 in his sleep. Shocked? Don't be. This is due to a medical condition a sleep disorder called narcolepsy. Doyle has been suffering from narcolepsy a sleep disorder for many years. Earlier his turns lasted for 5-10 minutes off-late they last for about half-an-hour. But Doyle isn't the only one suffering from