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stretch one's legs
Fig. to walk around and loosen one's leg muscles after sitting down or lying down for a time. We wanted to stretch our legs during intermission. After sitting in the car all day, the travelers decided to stretch their legs.
stretch your legs
to move around after having to be in one place or position for a long time We drove there in five hours, including a couple of stops to stretch our legs.
stretch (one's) legs
To go for a walk, especially after a lengthy period of sitting.