This is a restorative sequence for those of us who spend a lot of time in front of a desk or in front of a steering wheel. The act of sitting has recently been accused of being worse for us than smoking. Though I believe this is a gross exaggeration, it's not untrue to say that sitting for hours at a time is indeed not the best thing for us.
These four exercises counteract the seated position, with an emphasis on spinal extension and lengthening the hip flexors.
Following along with the routine here will take you 15 minutes.