The human immune system is a highly intricate network of cells and molecules designed to keep the host free from infection and disease. Exercise is known to have a profound impact on the normal functioning of the immune system. Dr. Simpson discusses exercise and the immune system in the wake of the COVID-19 pandemic.

One of the most common myths associated with youth fitness programs is that resistance training is unsafe and harmful to the developing skeleton of children. Drs. Faigenbaum, Lloyd and Oliver dispel this myth.

The ACSM Annual meeting has many sessions in the topical area of Epidemiology and Biostatistics, Physical Activity, and Health Promotion/Interventions. Dr. Charles Matthews summarizes the not-to-be-missed sessions.

Exercise intolerance exhibited by heart failure patients stems from various factors originating in various body systems with the most negatively affected being the pulmonary system. Diba Mani discusses the article by Lalande and colleagues which elaborates on the role the pulmonary system plays in exercise limitation in patients with chronic heart failure.