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Do all the teenagers over there load up on "Energy" drinks and start the kids on coffee early on? .........
I drank coffee for about 3 years as an adult. Once I stopped, sleep went back to normal. I wake up after 7 3/4 hours pretty much but will sleep an extra 45 if I've had a big, physical day.
As
@Chippy_Tea pointed out there is a bit of a hiatus in the UK at the moment with regard to youngsters drinking "Energy Drinks", but it is mainly being driven by the companies that sell the stuff as the parents are unaware of the dangers!
With regard to the consumption of coffee, especially for children, it seems to be an American "thing" because over here and in continental Europe, children are introduced to tea, coffee and even wine at a very early age. In many continental countries, the coffee is "espresso" and almost nowhere is anyone expected to pay more than €1.20 (£1.05 / $1.4) a cup.
In a recent episode of the US TV programme "Young Sheldon" his older brother (a teenager) was stopped from drinking coffee by his mother. An amazing thing for me to see because at that age most kids here drink coffee or tea (which actually has a higher caffein content than coffee) as part of a family breakfast at least.
In my own childhood my Grandmother kept an enamel tea-pot simmering on the fire all the time with a kettle full of water alongside. The tea was a tar like substance which, for women and children, was diluted with water from the kettle.
Whenever the "tea" started to go pale Gran would add another spoonful of tea-leaves and only at the end of the day was it allowed to be drained. At that time the tea-leaves were removed and stored so that they could be sprinkled on the carpet to act as a cleaning agent before it was taken outside to be beaten. Every day, a fresh pot of tea was started on the fire with a minimum of boiling water and a maximum of tea-leaves! For the tea to be worth drinking the phrase "You could nearly stand a spoon up in it." was almost a truthful description!
Even before I had arthritis, I very seldom slept more than six hours in any twenty-four hour period; and as a general rule, no matter what time I go to bed, I get up no later than 9am!
If I sleep for more than four hours at a time, my joints start to seize up with arthritis so, in my opinion, the joys of old age are very much over-rated!