1 In the interests of safety and hygiene please ensure that your Thermos flask is cleaned with warm water and washing-up liquid prior to initial use.  For best results from your flask, before use, pre-fill for about 3 minutes, using either hot water for hot drinks or cold water for chilled drinks.
Extrapolating these findings to the general population, the authors estimated that 8 million elderly persons nationwide have insomnia on any given day, more than 1 million new cases of insomnia develop each year, and symptoms resolve in nearly 1.3 million elderly persons annually.
Yet, when it seems as though you're the only person in the world who isn't sound asleep, the following insomnia facts and figures will show that you've got plenty of company. General Insomnia Statistics. 1  People today sleep 20% less than they did 100 years ago. 2  More than 30% of the population suffers from insomnia. 3  One in three people suffer from some form of insomnia during their lifetime. 4  More than half of Americans lose sleep due to stress and/or anxiety.