Snow shoveling poses significant health risks, particularly for individuals with heart conditions or those who are not physically active. The combination of strenuous activity and cold air can lead to increased strain on the heart, potentially resulting in heart attacks or sudden cardiac arrest. The AHA's warning underscores the importance of taking precautions to minimize these risks, as hundreds of deaths are attributed to snow shoveling each year in the U.S. The guidance is especially relevant for older adults and those with underlying health issues.