Now getting out of bed is dangerous! "Getting up in the morning is the first, and for many people, the most perilous moment of the day. You can sprain an ankle on the stairs, scald a hand while making tea or be floored in an ungainly tussle with your underwear. But according to researchers, grogginess after waking should be treated more seriously for how it impairs thinking and memory skills - and the implications for doctors, firefighters and other staff roused straight into action upon waking. A study by scientists at the University of Colorado suggests that the performance of people immediately after waking is as bad as, or worse, than if they were drunk. The research showed that short-term memory, counting skills and cognitive abilities were impaired in the groggy period, known as sleep inertia".