This. Natural tits that big are a fucking burden and are never that high without a massive bra. That these guys think natural breasts look like this means they think the implant look is normal. So they're only attracted to women in porn or anime and pitch a fit if women in media dont look like that.

Dumbbells sound like a good option but: almost none of your muscle is in your arms. It's in your back, butt, and legs.

Carrying around another person, or perhaps a large dog, has a bigger bang for the buck.