Baby, every day in training to get the gold
That’s why your body's crazy
Justin speculates from the gate that the daily grind’s what changed his girl.
The gold here is the top metal. She could either be a literal or metaphorical boxer, but it can actually go both ways. The gold could also refer to a gold ring — and she is training to be a woman someone would want to “wife up”, appearance-wise, (her body). But Justin realizes flaws in the next lyrics.
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