Summarize the following:
The most recognizable Lens was one of their first: puking rainbows. Since then, Snapchat has continued to push out new Lenses regularly -- face swapping, various animal faces, character transformations, facial contortions, "Birthday Party," and more. Lenses are special effects that are applied in real-time using face detection so you can watch how your actions affect the Lens on screen live. As Lenses are often interactive, you may have to match a certain motion in order to produce a certain effect (e.g. open your mouth for the rainbows to continually waterfall out). There are 10 free, featured Lenses per day, and they change. If you did purchase any Lenses when that was an option, those are permanently available to you. Lenses are used before you take or record your Snap, while filters are added after you take the Snap. You can use both Lenses and filters on the same Snap. Lenses do not work with the majority of Android smartphones, and only work with recent iPhones (though there have even been reported inconsistencies with recent iPhones). If you don't have a new device, there's a good chance that you won't be able to get Lenses to work, and even if you do there is a chance it just may not work. The iPhone 4 and first-generation iPad are not supported. However, various supported devices have had some users report that the feature does not work for them. Lenses requires Android 4.3 or later for Android devices. Even with the latest updates, some users report that the feature still will not work. You'll need to make sure that you're running the latest version of Snapchat to access Lenses. You can update Snapchat from the App Store or Google Play Store. See How to Upgrade Snapchat for details on updating your Snapchat app. Lenses work by recognizing a face and then morphing it with effects. You can use it with either your forward-facing or rear-facing camera, but you may find it easiest to test with the front-facing camera. Opening the app will take you directly to your main camera. There are two ways to access the forward-facing camera: Tap on the top right icon (a circle enclosed by two arrows); this will give you access to your forward-facing camera. You could also simply double-tap the screen to switch between cameras. Lenses work best when you can see your entire face in the frame. Also, make sure the lighting is decent; otherwise; this may hinder the facial recognition. Swipe left and right to select from the Lenses available. Snapchat rotates the Lens selection on a daily basis, so there are always new choices. Some of the popular Lenses that you'll likely encounter include puking rainbows, screaming, zombie, "in love," and crying. "Birthday Party" Lens is activated on your birthday (if you've activated Birthday Party in Settings). You can also access this Lens when it's a friend's birthday -- simply look for the cake icon next to their username to indicate their birthday, and tap the cake icon to get access to the Lens right away. Because of the rotating selection, the Lens you are looking for may not be available. Check back in the next day or two to see if it has become available again. Many Lenses will display a quick command to make the effect happen. For example, to do the puking rainbow you're prompted to open your mouth. Once you're ready, you can tap the Capture button on the bottom (in this case it will have the image of the feature you select) to take a Snap (photo), or press and hold it to record a video (up to 10 seconds). Your Lens effect will be recorded in the Snap. For photos, on the bottom, left you will see an icon of a '3' with a circle around it. Tap that to select the number of seconds (up to 10) you would want your photo to last for when being viewed. Android devices must be running 5.0 or later to record video Snaps with Lens effects. The iPhone 4, 4S, and iPad 2 are not supported. Even with compatible devices, there have been reports of the feature not working for some users. Consider adding additional effects (text, drawing, emoji, and stickers). All the other effects can still be applied onto a Snap that's used the Lenses feature (as explained in the other sections). Once you've captured your Snap, you can send it to the Snapchat contacts you select, post it to your Story (visible for 24 hours), or just save the photo/video without posting just like you would any other Snap. The second icon from the left on the bottom with an arrow and line will save the photo/video without posting it. The third icon from the left on the bottom with a box and a plus will only post it to your Story, which is available for 24 hours to anyone you've enabled to see it. Tap the blue Send To button in the bottom-right corner to select the people you want to send your snap to. You can also select your Story. After you selected your recipients, tap the blue arrow in the bottom-right corner to send your Snap.

summary: Understand what the Lenses feature offers. Acknowledge the mobile device and hardware limitations of Lenses. Update Snapchat. Switch Snapchat to Selfie mode. Hold your phone away so you can see your entire face. Select the Lens that you want to use. Follow the instructions for the Lens you chose. Take or record a Snap. Send your Snap.

Summarize the following:
Avoid hard foods, as well as foods that require you to stretch your mouth open wide. These can include nuts, hard candy, hard baked goods, and larger fruits or vegetables like whole apples or uncut, raw carrots. You should also avoid chewing gum and other stretchy candy, such as taffy. If you sleep on your side and you're experiencing jaw pain, you may want to try sleeping on your back at night to remove pressure from your jaw. You may also want to invest in a mouth guard to keep from grinding your teeth at night, as this may contribute to jaw pain without your realizing that it is happening. Over-the-counter pain relievers like acetaminophen or ibuprofen can help treat inflammation and other symptoms of jaw pain. Gels or mouth swabs containing Benzocaine or similar active ingredients can be found at most drug stores and provide topical pain relief to teeth and jaws. Move your jaw open and closed, then work the jaw from side to side. Gradually increase the frequency of these exercises. First try using a hot compress, but if heat does not alleviate pain or inflammation, try a cold compress. Run a towel or wash cloth under warm-to-hot tap water. Wring out excess water. Once the towel is at a comfortable temperature that will not burn the skin, apply it to the affected area of your jaw. Hold the hot compress on for about five to ten minutes, and repeat several times each day. If a hot compress does not work, use a cold compress or an ice pack. Ice packs should be used for about 20 minutes on, then 20 minutes off. Make sure you wrap the cold compress in a t-shirt or other thin fabric so the cold doesn't damage your skin. You may also want to try alternating hot and cold compresses to maximize the benefits of each. Use a hot compress for five minutes, then a cold compress for five minutes.
summary: Change your diet. Change the way you sleep. Use medication to treat pain. Try a topical agent. Exercise your jaw muscles. Use a hot or cold compress.