It will not make you lean, it won’t protect you from heart disease and it won’t even increase your energy. Even worse, do enough aerobics and it will make you tired, sick and previous before your time. The modern focus can be on addressing a significant health problem for some adults, the loss of 7-10 pounds of muscle mass every decade. The just type of exercise that may reverse this craze is strength training exercise. Recovering and rebuilding lost muscle is becoming imperative inside our sedentary and inactive world as this factor only is directly associated with at least 50 illnesses and conditions.5. Kannel WB & Benjamin EF. Status of the epidemiology of atrial fibrillation. Med Clin North Am 2008;92:17-40. 6. Marini C, De Santis F, Sacco S, et al. Contribution of atrial fibrillation to incidence and end result of ischaemic stroke: results from a population-based study. Stroke 2005; 36:1115-9. 7. Lloyd-Jones DM, Wang TJ, Leip EP, et al. Life time risk for development of atrial fibrillation: the Framingham Heart Study. Circulation 2004; 110:1042-6. 8. Goodacre S, et al. ABC of clinical electrocardiography. Atrial arrhythmias. Br Med J 2002; 324:594-7. 9. Kelly-Hayes M, et al. The influence of gender and age on disability following ischemic stroke: The Framingham Research.