Sitting all day long at work is not a great idea. There are already plenty of standing desks that let you stay more active at work. Officiser can also help. It gets your legs moving to stimulate blood circulation at work. With width control, you can customize your Officiser experience.
Officiser lets you work on your calves and other leg muscles with simple push and pull moves. The device is compact and easy to use. It will have an app too. More information is available on Kickstarter.