Want to live longer? A new book says the way to make it happen is kick back and be lazy. “The book begins with an explanation that we are all born with a limited amount of “life energy”. If we use it all up quickly – by exercising and getting stressed out – we will die early. If we do very little and live life at a snail’s pace, we can eke it out and live much longer. It’s a theory that doesn’t find much support in the scientific community…