Fast or slow metabolisms are not a "lie"

> That is a lot, or about as much intraindividual variance (when dividing the mean by the standard deviation) as something like IQ.

Isn't iq an arbitrary scale? Does this make sense?

Are smart scales accurate to 5% in measuring resting metabolic rate? My Omron says 1950 calories but I swear others can have much more junk food and alcohol.

Not even close. They probably take the estimated fat-free mass (which comes with huge error bars), run it through something like the Katch–McArdle/Cunningham formula, which has IIRC something on the order of a 200 kcal stddev.

Re others having much more junk food and alcohol: you don't see what they're eating when you're not around. I'm one of those "fast metabolism" people, but what that also tends to come with is a very responsive appetite: left to my devices I eat a lot less the day after a big meal.

I need gwerns take on this

Sigh.. bro makes the classic mistake of using the physics terminology vs how people understand the terminology.