Re: This is normal in every human endeavor.
...and as I walked across the first boundary I held both arms out wide and clicked my fingers (the lights came on), across the second boundary (click! - lights) and into the third zone (fiat lux!).
We had a salesman who was often first into the office, purely so that he could experience the ego-trip of having the lights turn on as he walked the length of the office.
Bloody useless salesman he was, too :)