Acute coronary syndromes (ACS) are one of the most common causes of hospitalizations in developed countries. Implementation of optimal treatment in these patients is a significant clinical and social problem. Clinical practice guidelines published by the European Society of Cardiology (ESC) are focused on crucial tasks such as regular physical activity sufficient to increase exercise capacity, smoking cessation, a Mediterranean diet, intensive control of risk factors for atherosclerosis (hypertension, diabetes, platelet hyperactivity and hyperlipidaemia) and, in selected cases, coronary revascularization. This review considers non-pharmacological management after ACS, focussing on rehabilitation, appropriate diet and healthy lifestyle.