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.

• jog memory
• jog your memory
• John Bull
• John Doe
• John Hancock
• Johnny-come-lately
• Johnny-on-the-spot
• John Q Public
• joie de vivre
• joined at the hip
• join hands
• join hands with
• join hands with someone
• join in
• Join the club!
• join the fray
• join the ranks of
• join the ranks of something
• join up
• joker in the pack
• joke's on
• joke's on someone
• judgment call
• juggling act
• juice up