Burn 150 calories at your desk ?

Ok. I'm trying these today. Look here.

Seated Strong Woman

Stretch your spine and work your core with this simple desk chair move.  First, pull your body away from the chair back so you're sitting with a long  spine. Then, take 10 deep breaths. With each exhale, pull your belly "in" to  your back, like you would during a crunch. You'll feel totally relaxed  afterward.

Estimated calories burned: 15.