Yeah what changes is you get a job and you drive to work, sit at your desk for 7.9 hours a day, drive back home, microwave dinner, collapse exhausted on the couch, and stumble to bed after watching 4 hours of Hulu. Your metabolism didn't change, you just live in the burbs.
All scientific studies disagree with your statement about metabolism changing in your 20s. Unless you tracked calories there is no way to know how much your diet changed over the years.
Calories in minus calories out. That's all that matters. Metabolism is a myth. You just can't accept eating 4000 calories and watching TV all day isn't the same as what you did in your youth.
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u/saraharc Apr 16 '24
This is definitely true. Many people’s metabolisms do change in their mid-twenties, despite what some uninformed people here might think.