Aerobic activity, the ability of the heart, vascular network, and lungs to perform work, is important for good health. Good aerobic fitness (aerobic capacity) is linked with a lower risk of heart disease, various forms of cancer, lower rates of metabolic disorders, better mental health, lower odds of premature death from all-cause and specific diseases. Now a meta-analysis (analysis looking at many studies) has shown that higher levels of aerobic fitness are associated with a lower risk for heart failure. Heart failure Heart failure is a major health concern and can affect people who have had a heart attack (myocardial infarction) or have hypertension which is uncontrolled and other disorders.…