this seems to goes against almost everyone's experience and my own -maybe we're bad at tracking calories from a decade or longer ago? -eating too much and not knowing it? -inactivity? -stress du to family and job causes subtle changes that lead to weight gain -change in gut bacteria? -increased skin, organ, bone, and tendon/ligament mass? (non-muscle lean mass) Some people balloon after the age of 20-30 or so, like d…
Well if we’re going off opinion rather than tested hypothesis, my observation is that the reason people gain weight after college is gradual lifestyle changes leading to less sleep, alcoholic calories, sugar, more sitting, less exercise etc
I think a lot of people don't realise or perhaps consider that moving from school/University to the workplace can drastically change the amount of time you are moving throughout the day and your physical activity.
I used to work in a retail environment where I was on my feet all day in my early twenties, then I moved into an office environment. During both workplaces I exercised a lot but I absolutely noticed that I needed to be more conscious of what I am eating after having started working in an office.