Sometimes adjectives can be placed directly after a non-copular verb or verb phrase:
We would swim naked every day.
They got married young.
He walked barefoot on the still charring coal.
In these examples, the complementary adjectives and the verbs concur, but the verbs themselves are not the copulae that connect the adjectives to the subjects. Instead, the verbs express actions or states that are independent of the adjectives. Essentially these examples could be paraphrased as follows:
We would swim every day and we would be naked doing so.
They got married and they were young doing so.
He walked on the still charring coal and he was barefoot doing so.
What is this usage called, in grammatical terms? I'd like to learn more about the thinking and rules behind this sort of construction.