A single posture or accent does not create a complete person. Build physical choices from circumstances, habits, goals, relationships, and the current situation rather than imitating stereotypes.
Start with a specific need
A person may guard an object, keep distance, occupy a doorway, or sit near an exit because of a specific circumstance. Ask what the character is doing and why it matters.
Notice habits without caricature
Observation can provide details, but avoid reducing a community or individual to an exaggerated mannerism. Choose a behaviour that serves the character rather than signaling a stereotype.
Let behaviour change
A character who feels secure may take up space; the same person may retreat under pressure. This is a question to explore for a particular role, not a universal body-language rule.
Keep choices flexible
Directors may adjust movement for blocking, camera, safety, continuity, or story. Treat preparation as a proposal, not a demand that production preserve every imagined choice.
Try it in your next rehearsal
Choose one physical habit tied to a specific circumstance. Play the scene with and without it. Keep the habit only if it clarifies behaviour or helps you pursue the objective.