What's it good for? Alerting you before you get sick

Having a good look in the mirror could solve a lot of your problems before they appear. One of the first parts of your body to show that a cold or flu is coming is on your tongue.

Look for signs of swelling or for your tongue to be covered with a white layer – signs that your body is fighting an infection. Add more vitamin C and zinc lozenges to your diet to reduce the symptoms of what's coming.