Take 5-minute breaks throughout the day to stretch your arms, legs, and back. Also do this simple core-strengthening exercise right at your desk: Sit up straight on your chair, keep your feet on the floor, and your knees over your toes. Tighten your abs and straighten your back while keeping your neck relaxed. Hold this position for 10 seconds or longer. Repeat a few times. If your office allows it, swap your chair for an exercise ball that you can sit on throughout the day. This will help improve your balance and tighten your core.

5 Quick Workout Tips for Working Days Source: South Beach Diet