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A ganglion cyst is a firm, fluid-filled lump that can suddenly appear on the front or back of the wrist or at the base of a finger. These cysts grow from normal tissue in the wrist and fingers, and range in size from a pea to a peach pit. Read on to learn more.

As food moves along the digestive tract, it is digested. This means it's changed into substances that can be absorbed into the bloodstream.

Most sunburns are minor and go away in a few days. But sunburns can be serious. It's important to know when to get medical care.

Sharp vision depends on many factors. The parts of the eye work together to bend (refract) and focus light rays.

Understanding how different foods affect blood sugar can help you manage your diabetes.

A jaw that’s too small, too large, or crooked can cause problems with chewing, speaking, breathing, and even sleeping. The shape of your jaws also affects the way your face looks. This sheet helps you understand how the teeth and jaws work. It also describes common jaw problems that may need treatment.

Learn this exercise called arm reach or "the bird dog" to help strengthen your core muscles.

Learn how to do a heel raise to help strengthen your knee and calf.

Hamstring stretches help stretch your legs for greater flexibility.