<p>Mandatory ping-pong (also known as gym), but not lunch. During freshman year I just didn't eat lunch, because it was too much of a hassle to bring it in every day and most teachers won't let you eat in their classroom.</p>
<p>The only problem with having a mandatory lunch period is that you'd have to cut out a class, and I've had enough trouble fitting in all my classes with 9 periods.</p>