Beauty that you want to share.

Endomorph

This is actually not a joke. I think one of the main reasons why half of the nerds are fat and the other half are skinny lies precisely in this. Even if you take a school class as an example, some of them will be skinny, others will be larger, and some will even have good muscles for their age. Is it due to lifestyle? No, by the time they reach junior or middle school, whether or not a student participates in a sports section is not enough to drastically change their physique. That is, some are lucky enough to be normal (mesomorph), while others are plump (endomorph) or skinny (ectomorph). It's not entirely clear why some girls grow up slender while others become… well, you get the idea.
Of course, I'm only talking about childhood here, because later on, almost everything can be ruined or, conversely, improved.
For example, when I started going to the fitness club at the age of 13, I (an ectomorph) was very thin, just skin and bones, while my brother, who led a similar lifestyle, was heavier and more muscular (an endomorph). I gained weight very, very slowly, but I never had problems with fat, while he had the opposite situation. And mesomorphs are just lucky – they have it all good.

I stopped exercising about three years ago; as you can see above, my arms are now as thin as spaghetti again, my belly has almost disappeared, etc., but despite the years spent sitting around doing nothing, fat has not accumulated anywhere; while many endomorphs cannot get rid of it even with training. That's how it is.
(by the way, my fingers are like octopuses again; sorry, but I can't take pictures with one hand on this phone – my fingers are shaking).
In short, here's another example of how everything in life is determined by randomness – both the spawn (region, upbringing, and environment) and genetics (absolutely all stats, including external parameters). Everything is predetermined by fate.