Step 1: Jump up and down on both feet or alternate your feet.
Step 2: Move your arms as if you're turning a jump rope.
Step 3: Keep jumping for 5-10 minutes.
If you prefer a lower-impact exercise:
Step 1: Tap the balls of your feet on the floor in front of you - first right then left - and use the same arm-turning motion as above.
Step 2: Keep tapping for 5-10 minutes.
Put together your own office fitness routine by reviewing the exercises in our Workplace Fitness Library.