Can Exercising Too Much Cause Heart Health Problems? Retrieved 05/04/2019 from https://www.healthline.com/health-news/can-exercising-too-much-cause-heart-health-problems#1
What Is Coronary Artery Disease? Retrieved 05/04/2019 from https://www.webmd.com/heart-disease/coronary-artery-disease#1
Exercise Addiction. Retrieved 05/04/2019 from https://www.healthline.com/health/exercise-addiction
Exercise Bulimia: Symptoms, Treatments, and More. Retrieved 05/04/2019 from https://www.healthline.com/health/exercise-bulimia-symptoms-treatments-and-more
6 Ways to Live a More Active Life. Retrieved 05/04/2019 from https://www.healthline.com/health/womens-health-active-lifestyle#1
Moderate to Vigorous - What is your level of intensity? Retrieved 05/04/2019 from http://www.heart.org/HEARTORG/HealthyLiving/PhysicalActivity/FitnessBasics/Moderate-to-Vigorous-What-isyour-level-of-intensity_UCM_463775_Article.jsp#.XR8IYJMzau4
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Physical Activity and Adults. Retrieved 05/04/2019 from https://www.who.int/dietphysicalactivity/factsheet_adults/en/