Pandiculation will turn out to be a very useful word here; as defined by the OED, it's "an instinctive movement, consisting in the extension of the legs, the raising and stretching of the arms and the ...

Try this stretch for firmer upper arms By Karen Voight May 24, 2004 12 AM PT Karen Voight can be reached at [email protected].

Dynamic stretches can be functional and mimic the movement of the activity or sport you’re about to perform. For example, a swimmer may circle their arms before getting into the water.