{"product_id":"books-the-high-performance-heart-by-philip-maffetone","title":"The High Performance Heart","description":"This work shows how to use the heart rate monitor to set up specific training schedules which require less time and drudgery, while achieving much more than in conventional workout regimes. This book also contains personal training instructions.","brand":"World of Books ","offers":[{"title":"Default Title","offer_id":53507294920977,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/9780933201378.jpg?v=1778123322","url":"https:\/\/www.worldofbooks.com\/products\/books-the-high-performance-heart-by-philip-maffetone","provider":"World of Books ","version":"1.0","type":"link"}