Step 1: Place a ream of paper (or phone book) on the floor.
Step 2: Step onto the paper with only the balls of your feet – your heels should hang over the edge.
Step 3: Flex both your feet upward, putting your weight on the balls of your feet.
Step 4: Lower to the starting position.
Step 5: Do 20 reps.
Put together your own office fitness routine by reviewing the exercises in our Workplace Fitness Library.