what are some exercises that can be done while sitting at a desk in an office all day?

Hi Ari
While sitting people can do scapular retractions, pelvic tilts, unilateral shoulder circles, shoulders up and down, adductor squeezes, dorsi-flexion and plantar flexion, ankle circles, wrist circles-flexion and extension of wrist, neck turtle exercises, bicep curls, and a chest exercise where you hold onto the bottom of the chair and pull up. I could go on but you get the picture. Many stretches can also be done in a chair.
Check the internet for inflight exercises.
Danielle