Even if work piles up in the office, you don't have to completely shove aside taking care of your fitness. This quick workout from DAREBEE can help keep your exercising momentum, or at the very least, offer a nice breather from a stressful day of work. All you need is an office chair.
Most of the suggested exercises should be familiar to you. For example, you already technically do chair squats every time you get up to a standing position from your chair, but you're aiming to do the motion more slowly and deliberately. You also already do "chair body lifts", which works out triceps, whenever you re-adjust yourself in your seat. Chest squeezes can be effective because you're working your chest muscles with isometric contractions. And criss-cross arms are just great to help you break away from hunching over your computer.
Try this workout the next time you have 15 minutes to spare. And if you don't want to get weird looks from coworkers, you can always duck into an empty meeting room, or do them on the stairwell.