The Relationship between Healthy Lifestyle and the Level of Physical Fitness of 8th Graders at State Junior High-school 1 in Sleman In Proceedings of the 3rd Yogyakarta International Seminar on Health, Physical Education, and Sport Science in conjunction with the 2nd Conference on Interdisciplinary Approach in Sports YISHPESS and CoIS - Volume 1, 110-114, 2019 , Yogyakarta, Indonesia