Physical Exertion Engaging in physical activity in cold weather can put extra strain on the heart and increase the risk of heart attacks. It is important to be cautious and gradually warm up before exercising in the cold. Preventing Heart Attacks in Winters To prevent heart attacks during the winter months, it is essential to dress appropriately, stay active, manage stress, eat a heart-healthy diet, and keep warm indoors. By taking these precautions, individuals can reduce their risk of heart-related complications and stay healthy during the winter season.