The body language of the arms

In body language, crossed arms mean that the person is either uncomfortable or offended. A person will cross their arms if they feel shy, uncomfortable or unhappy. (See Why do people fold their arms while communicating with others?)

If a person touched you with one arm while shaking hands then it might mean that they are being sincere about their emotions. A person will hardly touch another if they don’t like them. (See Why do some people touch others while speaking?)

A person will usually put their arms on their waist when they experience frustration, aggression or both. If a person got frustrated then they will put their hands on their waist.

When a person puts their arms behind their back, it means that they are feeling confident or even superior.

Expanding the arms in such a way that a person takes a bigger space is a sign of confidence. People who are sure of themselves take bigger space.

When a person clasps their hands on their stomach (not folding his arms), this means that they feel confident and self-assured.

When a person puts both of their arms behind their head while sitting, it means they feel over-confident.

Some people use their arms while speaking to deliver the information properly. The arm movement could indicate that the person is being honest, especially if their palms are showing.

A person can put their arms above their head when they get defeated or when a serious problem happens. You can see this during football matches when one team loses.

If the person contracts their arms to take smaller space then it might mean that they are not that sure of themselves and that they might want to hide or escape.

Extending one arm and pointing one finger towards another person is considered a hostile and aggressive move in body language.