To really beat that lethargic feeling at work, the Walkstation from Steelcase elegantly combines a treadmill with a workstation. These units are pretty pricey (starting around $4200), but you may find that an office could share the Walkstation as a "drop zone" used by several employees. If you are wondering if walking on a treadmill would still allow you to preform your daily work tasks, check out the results of this study which proved that participant's performance did not drop, but did take a bit of getting used to.
The Gamercize PC stepper turns your workday into an exercise challenge by disabling your technology unless you are in motion. That’s right, the stepper is connected to you keyboard and mouse, so that they freeze if you are not moving. You can use the Gamercize while seated, or at a standing desk.
Sitting on an exercise ball will help tone your abs and back, but make sure your setup is considering ergonomics. Select the correct sized ball so that you are sitting with your legs at a 120 degree angle to the floor with your feet flat. The key is to use your muscles all day long while on the ball to keep you from slouching. If your core is not already strong, you may want to start off with half days of using the ball, so as not to injure your back. Livestrong has more great tips on using your ball correctly at your desk.
photo by Elizabeth Skene
I first saw a mini exercise bike in use when the coworker in the “cube” next to me bought one. He got a lot of weird looks at first for his enthusiasm of peddling all day long, but also we were all really curious to try it ourselves. One thing to note is that there are several companies that sell these mini desk bikes, and they vary in their level of adjustability for resistance and also the noise they produce. The model my co-worker uses does produce an obvious whooshing sound that attracts attention, but the Magne Trainer ER has many high ratings for it silent action.