Vegeta’s neck development on Dragonball Z was incredible and we have proof. Throughout the series Vegeta’s neck muscles got bigger and bigger as the episodes went on, but many people never noticed.
To really put this in perspective take a look at the evidence below.
As you can see in our side by side comparison Vegeta went from having a pencil neck to having a neck the size of a tree trunk. That training to become a Super Saiyan stronger than Goku might have failed in the end, but at least Vegeta can say his neck development was completely unmatched.