I am often adding padding to the left and right of paragraphs to force copy down to prevent one word on a line. Or even worse, I add <br> to a word on the line above to prevent the word by itself. But this causes issues with responsive design because the <br> changes position breaking the layout. The script below can help find these cases and return a word down.
Remove one word lines in paragraphs
// removes widows from paragraphs and li
$('li, p').each(function(){
var string = $.trim($(this).html());
string = string.replace(/ ([^ ]*) ([^ ]*)$/,' $1 $2');
$(this).html(string);
});