>>917252It does matter but I'm saying it doesn't vary that much better average lifestyles, only if you do a very physically demanding job or maybe 2 hours of cardio a day

DOES METABOLISM VARY BETWEEN TWO PEOPLE?

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Does metabolism vary between two people?
Yes, metabolic rate (the amount of calories burnt a day) does vary between people. Most of the time, it isn't that much of a difference and isn't causative of obesity (where caloric intake and exercise are better predictors), but differences between people do tend to exist.
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Resting Metabolic Rate
>>One study[1]noted that one standard deviation of variance forresting metabolic rate(how many calories are burnt by living) was 5-8%; meaning 1 standard deviation of the population (68%) was within 6-8% of the average metabolic rate. Extending this, 2 standard deviations of the population (96%) was within 10-16% of the population average.[1]>>Extending this into practical terms and assuming an average expenditure of 2000kcal a day, 68% of the population falls into the range of 1840-2160kcal daily while 96% of the population is in the range of 1680-2320kcal daily. Comparing somebody at or below the 5thpercentile with somebody at or above the 95thpercentile would yield a difference of possibly 600kcal daily, and the chance of this occurring (comparing the self to a friend) is 0.50%, assuming two completely random persons.>>To give a sense of calories, 200kcal (the difference in metabolic rate in approximately half the population) is approximately equivalent to 2 tablespoons of peanut butter, a single poptart (a package of two is 400kcal) orhalfof a large slice of pizza. An oreo is about 70kcal, and a chocolate bar in the range of 150-270kcal depending on brand.