Focus on posture. During work hours get up and move a little during transitions. You can shake your sillies out too. Work is the best place to make an impact. Lead by example.
Today I exercised with little people. We jumped, hopped, and danced indoors. It helps to reduce some jitteriness and improves focus. Model posture during these activities and you have a great routine.
During your down time do it again by yourself. Before you know it you will complete your 30 minute goal between meals.