That is terrifying.
I used to think that I knew about food and diet. Using cronometer has been an eye-opener for me. Days when I don't cycle to work or paddle, my 'normal' food intake is well over what is required. If I ate like that and didn't exercise, I'd be pretty big. (Like my brother I guess, struggling to stay under 110kg instead of hovering around 73kg.)
Days when I cycle and paddle, I don't eat enough. Not enough protein, carbs, very low on vitamins. Malnourished. Before I saw the doc, I was worried I was diabetic.
People, the general populous, don't exercise enough.
Looking at the readouts has even changed how MrsC is eating - she feels more comfortable (justified) in eating 1/3 the amount I do when we eat together.