Posibleng Mga Sanhi para sa Kahirapan sa Pagtagal sa Pag-eehersisyo Anemia Hypoglycemia Labis na katabaan Morbid Obesity Iron Deficiency Anemia Hika Chronic na Obstructive Pulmonary Disease Pagpalya ng Puso Congestive Heart Failure Angina Pectoris Cardiomyopathy Coronary Atherosclerosis Malalang Coronary Syndrome Fibromyalgia Atrial Fibrillation Arteriosclerosis sa Ibabang Bahagi ng Katawan Chronic na Fatigue Syndrome Cor Pulmonale Dehydration Spinal Stenosis Atrial Flutter Neurocirculatory Asthenia Patent Ductus Arteriosus Atrial Septal Defect Paulit-ulit na Pulmonary Embolism Aortic Valve Stenosis Small-Cell Carcinoma sa Baga Pabalik-balik na Small-Cell Carcinoma sa Baga Graves Disease Heart Valve Disease