Conditional needed when post array is empty

Need a conditional written if there are no posts in a category. Ref: http://howlingwolfmedia.com/site3/classes/class-categories/
‘Personalized Training’ has no posts so want to echo ‘currently no classes offered in this category’ Thx

Tried is_empty or if else statements but having trouble implementing and syntax problems.

<div id="accordion" style="width:95%;">
<?php
    $args=array(
      'child_of' => 4,
      'orderby' => 'name',
      'order' => 'ASC',
      'hide_empty' => '0'
      );
    $categories=get_categories($args);
      foreach($categories as $category) {
        echo '<h3>' . $category->name . '</h3>
		<div>';
			global $post;
			$args = array( 'posts_per_page' => -1, 'category' => $category->term_id, 'orderby' => 'name', 'order' => 'ASC' );
			//alternatively this also works:  'nopaging' => true
			$myposts = get_posts( $args );
			foreach( $myposts as $post ) :  setup_postdata($post);
			echo  '<p><a href="' . get_permalink($post->ID) . ' " style="color:#7c7c7c; font-size: 1em; text-decoration:none !important; line-height:80%;">' . get_the_title($post->ID) . '</a></p>';
			endforeach;
		echo  '</div>
       ';
    }
?>
</div><!-- accordion -->