My function that does stuff
<?php
// Use this if working with Genesis
//add_action( 'genesis_before', 'my_function_that_does_stuff' );
// Use this if working with BB Theme
//add_action( 'fl_body_open', 'my_function_that_does_stuff' );
function my_function_that_does_stuff() {
echo 'Hello World!';
}