Book excerpt: This fully-illustrated New York Times bestseller categorizes an astonishing 2,100 yoga poses through photographs and descriptions for optimal benefit including adaptations for all levels of expertise and ages. A thoughtful, inspiring, meticulously-crafted guide to the practice of yoga, 2,100 Asanas will explore hundreds of familiar poses along with modified versions designed to bring more healthful options to yogis of all experience and ability. Organized into eight sections for the major types of poses -- standing, seated, core, quadruped, inversions, prone, supine and backbends -- and each section gently progresses from easy to more challenging. Each pose is accompanied by the name of the pose in English and Sanskrit, the Drishti point (eye gaze), the chakras affected and primary benefits.