exercise at work

Basically twitching your legs while sitting will burn calories (not much). I have a bad habit of doing it throughout the day and it burns some calories. Also take a stress ball to work and squeeze that from time to time. Other than that it all depends on where you work.

Squats and Lunges! Also Jumping jacks. Pushups of any variety. All great body weight strength exercises with a little cardio to get your hear rate up. I guarantee you'll feel better after them. I have a pretty high tolerance for public embarrassment though- I don't mind if people see me sweat! So you may want to choose accordingly

I sit at a desk all day at work, In heels so not much opportunity to exercise. I set little goals so I remember. Everytime I go to the bathroom I do Squats and every time I go to walk to the fax I'll walk the long way around the room to get there every time an email pops up I'll do a few leg lifts under my desk. Just to keep moving. Stops me falling asleep at my desk from boredom too