stretch your legs （久坐之后）散散步，活动活动腿脚

【例句】
It was good to get out of the car and stretch our legs.
我们下了车活动活动腿脚，真不错。

Come on, Chuck. Let's go over to Novi's and stretch our legs, get some air, couple of hoagies.
走吧，查克，我们去诺维家吃点东西。活动活动，透透气，吃点三明治。