What problems should we pay attention to in summer sports?

Summer has reached its hottest time. Although it is hot and dry, our basal metabolism is higher 10% in summer than in other seasons, so it is also a good season to lose weight. Exercise plays an important role in our weight management, physical and mental health, metabolism and so on.

Can't you continue to exercise in summer? Of course not, as long as corresponding measures are taken, there will be no problem! So today, instead of discussing functional training, we will discuss some matters needing attention in summer sports.

1. Dehydration

Because we will produce a lot of metabolic heat during exercise, in order to reduce this internal heat load, we will bring blood to the skin surface, thus cooling it down. When sweat glands secrete water on the skin, the water evaporates and takes away heat, thus cooling the blood below. Therefore, when the external environment is hot, the human body needs to evaporate more water to control the body temperature, thus reducing the heat load in the body. If you can't replenish water in time, the possibility of dehydration will increase, so high temperature is easier to dehydrate than other weather.

2. Increased heart rate

When exercising at high temperature, it becomes very difficult to dissipate heat in the body, and the external heat will greatly increase the total heat load. When the body tries to cool down, the blood vessels supplying the skin will be highly expanded, increasing the blood flow to the skin, thus reducing the blood flowing back from the heart. The heart needs to increase its heart rate to maintain a stable cardiac output. This has caused the heart rate to be much higher than usual when doing any intensity exercise.

For example, when we walk at a speed of 6 km/h, the heart rate is 125 beats/min, but it may rise to 135- 140 beats/min in high temperature environment. Therefore, if you want to exercise in a high temperature environment, you must first reduce the amount of exercise.

3. Heat exhaustion

When you exercise in a hot and humid environment, the air around your body will contain a lot of water vapor, so sweat is not easy to evaporate. Evaporation is the most effective mechanism to reduce body temperature, but it can not be completely evaporated in hot and humid environment. In this case, when the athlete can't adjust, resulting in a lot of water loss, it may lead to heatstroke.