Is there relationship between yawning and myocardiac infarction?

Yes, there is a potential relationship between yawning and myocardial infarction (heart attack). Yawning can be a sign of various physiological changes, including a drop in oxygen levels or increased stress, which may precede a cardiac event. Some studies suggest that excessive yawning could indicate autonomic nervous system changes associated with heart conditions. However, more research is needed to establish a definitive link between yawning and myocardial infarction.