Tour guides frequently:

• Stand for long periods of time.
• Walk or run for long periods of time.

It is important for tour guides to be able to:

• Speak clearly so listeners can understand.
• See details of objects that are more than a few feet away.
• Understand the speech of another person.
• See details of objects that are less than a few feet away.

It is not as important, but still necessary, for tour guides to be able to:

• Use stomach and lower back muscles to support the body for long periods without getting tired.
• Be physically active for long periods without getting tired or out of breath.
• See differences between colors, shades, and brightness.
• Focus on one source of sound and ignore others.