Stretching is vital for chronic pain, building muscle tone, and full movement. Does your lower back ache from sitting all day? Can you barely walk after your cycling class? Do you stretch your back and feel only more tension? Stretching is vital for chronic pain, building muscle tone, and full movement."Trainer to the Stars," Hollis Lance Liebman's book, 1,500 Stretches: The Complete Guide to Flexibility and Movement, has the complete collection of stretches organized by body part: back, calf, hamstrings, chest, and many more.He joins host Lisa Davis to share more from the book and why stretching is so vital for optimal health.