Finally, here are a few more wonderful exercises for cramped spaces (or as Courtney pointed out also good for those long days sitting in front of a computer).

For the Back and Chest

1) Sit tall in your seat, lengthening your spine.
Feel your low back imprint (push gently) against the back of your seat.
Your head and shoulders should be resting comfortably against the back of the seat.
Then arch only your upper back, as if you are sticking your chest out.
Hold for as long as is comfortable.
Release and Repeat.

It’s a small range of motion, but feels great through your chest and upper back, especially if you’ve been sitting with your shoulders rolled forward, hanging over in the car or at the computer.

For the Hips

2) Sit up nice and tall.
Leave your left foot comfortably on the floor, like you’re sitting in a chair (which you probably are).
Cross your right leg over your left thigh. (Generally, depending on your flexibility, your right ankle should be just above your left knee.)
Lean forward, from the hip joint, keeping the back long.
Only stretch as far as […]

Here are some more great exercises for confined spaces to help your body from getting too stiff:

For the Neck:

1) Sit up tall in your seat.
Tilt your head slightly to one side. (You want to feel a gentle stretch not a strain.)
Focus on tilting your ear to the shoulder, not your cheek to the shoulder.
Hold for a count of 10.
Repeat other side.

2) Turn your head to one Side
Tip your chin as if you were looking at your shoulder. (Again, you want to feel a gentle stretch not a strain.)
Hold for a count of 10.
Repeat other side.

Check back tomorrow for more exercises you can take with you whenever you travel.