When one arm is at rest on its side of the body, while the other arm is doing something else such as being spread out, reaching out, on the hip, behind the head, and so on.

If [b]both[/b] arms are at rest on [b]both[/b] sides, use the plural [[arms at sides]] instead.

h4.See also

* [[arm up]]
* [[arm behind back]]
* [[arm behind head]]
* [[arm above head]]
* [[arm around waist]]
* [[hand on own hip]]