KATHMANDU, June 21, 2016 (Xinhua) -- Nepalese man Uttam Muktan (L) receives the certificate of Guinness World Records for world's longest yoga marathon in Kathmandu, Nepal, June 20, 2016. Uttam Muktan had broken the record of Indian yoga teacher Yogaraj C.P. by performing yoga for 50 hours and 15 minutes from December 17 to 19, 2015. (Xinhua/Sunil Sharma)