NBC News medical contributor Dr. Vin Gupta breaks down the latest health screening tests you should know to help keep tabs on your well-being. Also, Dylan gets a behind-the-scenes look at the popular kitchenware brand Le Creuset and how they craft their signature products. Plus, psychiatrist and author Dr. Sue Varma shares thoughts and advice on happiness from her book Practical Optimism: The Art, Science, and Practice of Exceptional Well-Being.