Models frequently:

• Sit for long periods of time.
• Keep or regain their balance.

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

• Use stomach and lower back muscles to support the body for long periods without getting tired.
• Coordinate movement of several parts of the body, such as arms and legs, while the body is moving.
• Keep or regain the body's balance or stay upright when in an unstable position.
• Understand the speech of another person.
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• Speak clearly so listeners can understand.
• Move two or more limbs together (for example, two arms, two legs, or one leg and one arm) while remaining in place.
• Bend, stretch, twist, or reach out.
• See details of objects that are less than a few feet away.
• See details of objects that are more than a few feet away.
• See differences between colors, shades, and brightness.
• Be physically active for long periods without getting tired or out of breath.
• Use muscles for extended periods without getting tired.