system
Given the following post, respond as if you're commenting on Reddit:
human
[DBZ] Do humans have an upper limit that they physically can't surpass?

Saiyans seems to be able to reach insane heights of power, but humans seem left behind. Is it possible given the same level of training for Humans to grow to a similar level, or is it just not possible?
gpt
Saiyans have an unfair advantage over humans. First, a saiyan baby is almost certainly going to be stronger than any adult human, minus a few exceptions, probably due to being a warrior race that only lives for battle. 

Then, saiyans also have the ability of zenkai, which increases their power after any injury, especially from near fatal wounds that they survive.

There are a few unfair advantages on the saiyan side, but they most likely have an easier time with attaining much higher strength than humans due to evolutionary traits.

Some examples that humans are capable of greater feats would be Krillin, Tien, And even Yamcha, who are all impossibly strong compared to any human. Even by the end of the Frieza saga, Krillin and Tien are easily stronger than 90% of saiyans that have lived, Yamcha probably could hold his own as well.

Humans are capable, but it would probably take generations to develop the ability to catch up, even in the slightest.