Maybe I'm really confused, but how is this effectively any different from just "shifting" your personal schedule? The day is still the same length. The effect i

Maybe I'm really confused, but how is this effectively any different from just "shifting" your personal schedule? The day is still the same length. The effect is the same as if you just got up at 7am instead of 6am and went from there. Measured time exists only for interaction with others, so wouldn't it make more sense to continue to use society's time standard, and just shift your personal activities accordingly?