>>281444852
I've come to realize comics like that, and the "MUH BACK PAIN, HER SPINE" stuff, is just jealousy from chestlets, hambeasts and one other group of losers that I'm sure most can guess.
You don't even need back muscles, either. A lady just needs to get even a tiny bit of exercise, like walking a few times a week. Also practicing having good posture, which one should do anyway. Walking around with a hunchback because you're too lazy to stand or sit up straight is not a good look.
Also, if children up until the last decade could carry 20+ pounds of textbooks around for several hours of school, for ~12(+/-) years of their lives for compulsory education, and NOT develop any back issues, it's not going to bother most women. Yes, even the ones with larger busts, until you get into actual macromastia sizes, AKA actually the size of the head. Not your middling average D cups that way only a mere few pounds.
And I mean ACTUALLY the size of the head, not the normalfaggot "ZOMG! THEY'RE THE SIZE OF HER HEAD!!!", and they're not even close to the size of a head, like the OP pic. I mean stuff like picrel. I think this is a symptom of retardation/spergouts over seeing some boobs bigger than D cups for the first time in their respective lives.
Hitomi Tanaka's a good reference too, I know
>3D
but her pair is actually "THE SIZE OF HER HEAD" for each boob, and she's reported her bust to be ~7kg/15.4 pounds. Until you -that- kind of size, I don't want to hear "Ohhh her back her spine abloobloobloo" from titlets/fatties with only a mere 4 or 5 pounds of tittymeat on them at best.