In the USA, caffeine consumption among active duty US Air Force personnel has been studied. The following facts have been revealed.
The proportion of people consuming caffeinated beverages in the US Air Force is similar to the national average, about 84% of personnel drink anything caffeinated at least once a week. The most commonly consumed caffeinated beverages (% users) are sodas (56%), coffee (45%), teas (both hot and cold, 36%), and energy drinks (27%). Daily consumption (mg/day) of caffeine was higher among Air Force personnel than in the country on average. Characteristics independently associated with caffeine use among Air Force personnel included older age, ethnicity other than black, tobacco use, less aerobic exercise, and less sleep. Considering solely at the tea results of this study, we can get the following tea drinkers profiles.
Hot tea drinkers in the US Air Force are predominantly thin women-officers, who are former smokers, over forty years old, with Bachelor’s degree, sleeping more than seven hours a night, serving more than 13 years, but not participating in special operations. Their ethnicity, marital status and sports do not affect hot tea consumption.
Cold teas drinkers in the US Air Force are predominantly thin smoking men over forty, with secondary education, not Hispanic or black, sleeping less than four hours a night, serving more than 13 years, in the rank of junior enlisted, who took part in special operations. Their marital status and sports do not affect their drinking habits.
Now you see how many things can depend on the temperature of tea.