It is cold these days. Some elders and patients must feel uncomfortable because the temperature dropped abruptly. For example, the person who have heart problems and apoplexy. My grandfather has myocardial infarction. He felt his chest was tight and hard to breathe when the weather changed. I always worried about him because he lived with my grandmother, but no younger ones lived with them. If they fell ill suddenly, but no one noticed them. We will miss the first aid time. What my family have to do now is to take care of them more carefully, especially to give a phone call or stay with them to ensure that they have no problems.