i'm miranda esmonde-white, and i'm going to share that secret with you today. >> miranda esmonde-white is host of the long-running public television fitness show "classical stretch" and author of the book "aging backwards." miranda has been training professional athletes since creating her own fitness technique 15 years ago. >> as i've aged, and i'm now 78 my body feels like i'm, i don't know, 60. >> people are always commenting on how fit i look, and i say