Running at night in summer is less likely to cause heat stroke or myocardial infarction? The doctor said...

The hot and humid weather, with continuous high temperatures, is not only unbearable for ordinary people to go out, but even many people who usually run during the day can't stand it. In order to avoid the heat, many runners choose to adjust their exercise habits and turn to night running, hoping to cool off and avoid heat injuries such as heat stroke and heat cramps. However, is it true that running at night will reduce the risk of heatstroke? Let’s hear what professional doctors say!

Is the temperature lower at night than in the morning? Doctors: Outdoor exercise is not recommended when the temperature exceeds 35℃

Dr. Lin Junli, President of the Chinese Society of Cardiology and Executive Director of the Chinese Heart Foundation, said that although most people believe that the temperature will be slightly lower at night than during the day, in fact, sometimes the temperature at night may be higher than in the early morning. In particular, with the impact of global warming and the heat island effect, Taiwan has been experiencing a situation since 1940 where the average daytime temperature has not changed much, but the average nighttime temperature has continued to increase. Therefore, the temperature at night is not necessarily lower than in the early morning when the sun has not fully risen.

Because of this, people should never think that nights should be cooler than days and forget to guard against potential risks of heat damage such as heat cramps, heat exhaustion, and heat stroke. Or, they ignore the importance of timely hydration during exercise. In fact, when the human body is in a high temperature environment for a long time, not only is the chance of heat stroke greatly increased, but the rapid increase in metabolism and faster heart rate will also increase the burden on the heart, leading to insufficient blood supply to the blood vessels. If water is not replenished appropriately at this time, the body may fall into a state of dehydration, further causing the blood to concentrate and form blood clots, increasing the risk of cardiovascular blockage.

Therefore, in order to avoid the above situation, Dr. Lin Junli emphasized that people should fully warm up and drink water appropriately before exercising at any time and place. When the temperature exceeds 35℃, it is not recommended to engage in outdoor activities for more than 30 minutes unless necessary. People who have exercise and fitness needs are advised to exercise in gyms, stadiums and other air-conditioned spaces.

People must not forget to guard against potential risks of heat injuries such as heat cramps, heat exhaustion, and heat stroke just because they think that nights should be cooler than days. Or, they ignore the importance of timely hydration during exercise.

To prevent myocardial infarction and fatal heat damage, don’t take these symptoms lightly!

How can people judge whether they have accidentally caused heat injury or myocardial infarction? In this regard, Dr. Lin Junli said that in fact, heat damage can be divided into three major types: heat cramps, heat exhaustion, and heat stroke. The most typical common symptom among these three is that people often experience discomfort reactions such as nausea, dizziness, and weakness.

As for the precursors of myocardial infarction, they are mostly cold sweats, pale face, shortness of breath, chest pain, and even the occurrence of metastatic pain. In addition to chest pain, this pain is more likely to extend to the jaw, neck, left shoulder and other parts. Therefore, once the above-mentioned discomfort reactions occur in your body, you should stop exercising immediately, seek help from others, and do not force yourself.

The more exercise the better? Study: More than 6 hours a week is not good for health

Dr. Lin Junli also pointed out that although modern people generally have a sedentary work style and lack of activity, moderate exercise and fitness can indeed help improve cardiopulmonary capacity and muscle endurance, making the body healthier. However, it is worth noting that everything is excessive! According to research, if people exercise for more than 6 hours a week, it will not only be unhelpful to their physical health, but may also increase the risk of sudden death and stroke. In particular, if you engage in medium- to high-intensity marathons, triathlons and other intense sports, the harm to human health cannot be underestimated!

According to research, if people exercise for more than 6 hours a week, it will not only be unhelpful to their physical health, but may also increase the risk of sudden death and stroke.

Dr. Lin Junli shared that he had come across a very typical case, an entrepreneur around 37 years old, who had always paid great attention to his own health. Not only did his annual health check reports pass, but he also loved sports and fitness in addition to his busy work. Not only does he participate in a full marathon or triathlon every 1 to 2 months on average, he also regularly engages in activities such as jogging and badminton to exercise his physical fitness.

Unexpectedly, a few days after participating in a sports event, the entrepreneur suddenly suffered a myocardial infarction and fainted while playing badminton with his friends. After being rushed to the hospital, it was discovered that he had severe vascular blockage due to excessive exercise. Fortunately, his friend performed CPR immediately at the time of the accident and saved his life. Moreover, he successfully woke up after being in a coma for about a day in the intensive care unit, and his brain and nerve functions were not damaged. It was a blessing in disguise! This experience also made the entrepreneur, who had been through the gates of hell, say that he would exercise within his ability in the future and would never dare to over-exercise again.