1: Body 2: Physical activity 3: Therapy 4: Stretching 5: Training 6: Flexibility 7: Balance 8: Muscle 9: Movement 10: Relaxation 11: Weight 12: Injury 13: Treatment 14: Contraction 15: Fitness 16: Stretch 17: Exercise 18: Endurance 19: Health 20: Blood (As of 10:36)
Autoimmune disease refers to a disease that arises from an overactive immune response of the body against substances and tissues normally present in the body