Are you among the 'sleepless elite'?

Rather than being tired, bad-tempered under-achievers, the 'sleepless elite' are an energetic, outgoing and optimistic group who can happily and healthily get by on just four or five hours of shut-eye a night.

They also tend to be slim, able to hold down two jobs at the same time, and breeze through their extra-long days without needing caffeine pick-me-ups or catnaps.

American scientists who studied an extended family in California focused on a mother and daughter who appeared perfectly healthy despite their shared lifelong habit of getting up early in the morning, having gone to bed close to midnight.

Source: http://lifestyle.in.msn.com/health/article.aspx?cp-documentid=5119809