I'd forgotten how miserable it is flying in Economy. I am writing this on a flight to Copenhagen to attend some product training. SAS have a curious three-class cabin on this route: "Business", "Economy Flex" and "Economy". Given that the plane only seats about seven people (I'm flying from London City Airport), this does seem excessive.
I think Economy Flex is for passengers who have paid top dollar for full economy and "regular" Economy is for those of us who travel on dirt-cheap non-changeable, non-refundable tickets.
Either way, it means I have to pay for my food and drink.