Locker room teasing, gossip, online comments. It can get pretty rough out there as a teenager and comments about your appearance can be, well, cruel - and often inaccurate. Learn how to handle tough situations and better understand body image issues with this interactive comic strip.

It's not always easy to achieve a healthy, balanced meal (especially when those cupcakes look soooo good). Use this tool for eating right to help yourself visualize what real portions should look like on a plate. Select foods and portion sizes and see if you're making good nutrition decisions. The more you try it, the better you get.

French fries, pizza, donuts, burgers and super-size colas. See the real-deal with fast foods and place your bet - you'll be surprised. Check out this Vegas-style nutrition tool and take the gamble out of your eating habits and diet. Don't worry if you guess wrong, remember: What happens in Vegas, stays in Vegas.

We all have a bunch of moods all at once, but now you can actually see what they are: happiness, anger, sadness, excitement, boredom, anxiety, jealousy and a whole bunch more. Create your very own mood cloud with key "mood" words from your journal and selected health articles. It's cool, and a bit addictive. Try it.

Hydration nation. It's important as a teenager to keep hydrated with healthy fluids like water, milk and juice. Do you know what you should be drinking – and how much of it? Too little or too much of a good thing is NOT good. Track your hydration with our Glucometer and find out.

There are so many changes going on with your body. It could literally make your head spin. Take HeadSpin for a ride and learn the myths and realities of acne, sleepiness, body changes, and the amazing brain as it goes through adolescence. The more you know, the less you'll feel like you're spinning out-of-control.