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Centenarian Louis Weintraub works out at Fitness Connection in Sacramento on Friday. Lou Weintraub turned 100 in January. With the number of centenarians booming, California has 1/10th of the nation's population 100 and older. Weintraub is still very engaged with life (even though his eyesight is fading a bit, with macular degeneration). His wife, Roslyn Levy-Weintraub is 82 and still works as a real estate person.