مين اخترع الجري؟ المصادر كتاب corporate athele كتاب the complete book of running كتاب the age of fitness كتاب running and being - george sheehan قصة jim fixx https://www.si.com/track-and-field/2020/05/21/jim-fixx-legacy-running-coronavirus history of running shoes and the 70s boom https://www.theatlantic.com/entertainment/archive/2015/07/how-nike-turned-sneakers-into-fashion/397610/ https://en.wikipedia.org/wiki/Running_boom_of_the_1970s قصة treadmills https://www.nytimes.com/wirecutter/blog/history-of-the-treadmill/amp/ فوائد الجيم في المكتب https://www.business.com/articles/fitness-office-benefits/ Images Credits: AP (Jim Fixx/ NYC Marathon Paticipants) Lydiard Foundation (Arthur Lydiard) Researcher gate (ECG) Wikimedia Commons (Hunter-Gatherer /Frank Shorter/ Bill Bowerman/ Phil Knight/ William Staub/ Oscar wilde/ Robert Bruce/ George A. Sheehan) cooperinstitute.org (Kenneth Cooper/ space program training) Runnersworld. com (Women of Boston Marathon/ Pacemaster) Britannica (Goddess Nike / old treadmill in prison / Sir William Cubitt) Newspaper. Com (Nike Ads in 70s/ Jim fix’s death news/ Nobelprize. Org (Willem Einthoven) Time Magazine (America Shapes up Cover, Nov.1981 Issue) Nike. Com (Nike Shoes / Bill Bowerman and Phil Knight)