Line length in poetry

[billy]

I think the line as a breath is more one line of ip is the equivalent of one average breath, shorter lines get more lines forced into the same space.

what happens if you have asthma

i think some poems suit longer lines. and there's no rule that says you can use a comma, or period etc within a line.
i usually use shorter lines but i'm fine whatever the length as long as it's a decent poem.