Try to avoid using gestures like the thumbs-up and the OK sign (making a circle with your thumb and forefinger, with the rest of the fingers sticking up). These gestures don’t mean the same thing across cultures, and are quite offensive to some people.

Did your mother ever tell you that it’s rude to point your finger at someone or something, especially another person? Many cultures feel the same way. If you need to point something out, do so with your whole hand, rather than a single finger. The same goes for the single-finger “come here” gesture.

In North America, nodding your head signifies “yes” while shaking your head from side to side indicates “no.” However, this differs around the globe. In Arabic cultures, for example, nodding the head down indicates disagreement, while an upward motion indicates agreement. Use clear verbal messages instead of relying on head gestures.

The guidelines for eye contact vary widely between cultures. Some cultures expect assertive eye contact. In other cultures, avoiding eye contact is more appropriate.

Not all cultures shake hands, and those that do may not do so in the same way. When in doubt, a polite bow with your hands clasped across your chest is usually safe.

Cultural customs for physical contact can vary widely by culture and by person. For example, in some cultures cross-gender physical contact is forbidden. In other cultures, close physical contact (such as an embrace or peck on the cheek) between business associates might be expected. As well, parts of the body are sometimes considered sacred, so those considerations must be respected as well.

Different cultures have different expectations for personal space. North Americans, for example, feel more comfortable with a larger personal space, while Latin cultures feel comfortable with less personal space.

In some cultures, it’s acceptable to burp after a meal. In other cultures, this is considered extremely rude. Guidelines for blowing your nose and other hygienic behaviors can vary widely as well. Be aware of where you are and what is expected of you.

Humor can be a touchy subject regardless of culture. Avoid making jokes unless you’re absolutely sure of how it will be received. Sarcasm should always be avoided.