If you eat lunch at work, odds are you end up with a rushed lunch eaten at your desk while answering emails and responding to chats. Even if you don't have a full hour to dedicate to being mindful, take a few minutes to focus on your food.
Pay attention to how the food feels in your mouth and take a moment to really savor the flavour. Don't rush in between bites; take a moment to really enjoy your food and swallow completely. Take a breath before eating the next bite. When you feel your body getting full, stop.