Why office staff are always dead tired

Have you wondered why office staff are always dead tired by the end of the day and companies really require no further physical fitness programmes for their employees? The reason is that EVERYONE gets enough exercise by:

1. Jumping to conclusion
2. Beating around the bush
3. Running down the boss
4. Going around in circles
5. Dragging their feet
6. Passing the buck
7. Climbing the ladder
8. Wading through paperwork
9. Pulling strings
10. Throwing their weight around
11. Stretching the truth
12. Bending the rules
13. Pushing their luck
14. Shooting arrows
15. Fighting fire

NO WONDER THEY ARE ALL TIRED AT THE END OF A WORKING DAY!!