Your sources about metabolism are wrong. I know because I've done base metabolic rate tests in uni (with one of those hoods) and have seen (repeatedly) that som

Your sources about metabolism are wrong. I know because I've done base metabolic rate tests in uni (with one of those hoods) and have seen (repeatedly) that some people breathe out ~4k kcal per day and others only ~1.6k. This is at rest and at different times in the day.