While it may not be especially great for you, there's no denying that junk food is delicious. Nowadays, all the salty, fatty, sweet and savory stuff humans evolved to covet is both cheap and easy to access -- your brain is hardwired to seek those sensations out. Most adults understand the importance of moderation when it comes to junk food, but what about the kids? In today's episode, the guys explore the ins and outs of exactly how junk food manufacturers target children.