• Write your code to be as readable as possible.
• It doesn't matter if the total count of lines of your code becomes higher after the refactoring. If it's for the sake of clarity, it's perfectly okay.
• Don't be affraid to extract single line of code into a separate method. The descriptive method name works as a comment so you don' need in-line comments then.

When your coleague asks you: "So you just refactored the code to make 10 lines out of original 5 lines?"

What will you answer? You should answer "Yes. Because it's more readable this way. And atomic. And reusable".