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.
1 More than 30% of the population suffers from insomnia. 2  One in three people suffer from some form of insomnia during their lifetime. 3  More than half of Americans lose sleep due to stress and/or anxiety. 4  Between 40% and 60% of people over the age of 60 suffer from insomnia.