Every summer, many people will fall into the sorrow of losing weight. It is obvious that eating less in summer is suitable for losing weight, but after a few minutes of exercise, you will sweat your head and make people want to give up. I want to have a cool drink and apply an ice towel to lower my body temperature, but someone will tell you that it is more difficult to lose weight when you touch cold water during exercise? In fact, according to the research of Stanford University in recent years, a little cold compress on the palm before and during exercise can improve the amount of exercise and sports performance, and can also make the waist circumference 7.6 cm thinner in 12 weeks! World-class athletes are trying to improve their endurance and exercise through cold compress. The research team once asked athletes to do two kinds of weight training, grip strength and pull-ups, after cold compress, and found that the exercise time and times were improved compared with those before cold compress. Besides, Craig, who led the research? Professor Craig Heller also invited the pitchers of Major League Baseball to conduct a test. The data also showed that the ball control ability, ball speed and endurance of professional players were improved after the palms were cold-pressed, which also made more and more world-class players start to quickly cool their palms before and during halftime in order to restore their athletic ability in recent years. It is not only athletes who are effective, but obese women can obviously improve their physical fitness through 16℃ cold compress and 12 weeks cold water. Some people may wonder that these experiments are aimed at professional athletes who have been exercising for a long time. Can they achieve the same effect for ordinary people who don't exercise often? In 20 12, the team of the same school also tested 24 obese young women with body mass index between 30 and 34.9. Among them, 12 people soaked in 16℃ cold water before exercise and exercised for 45 minutes every day for 12 weeks. Other 12 people also used the same training program, the only difference was the warm water at 37℃ before exercise. After 12 weeks' observation, the researchers found that women in the cold water group spent 5 minutes less than those in the warm water group during the 2.4 km walk, and their average waist circumference was 7.6 cm thinner than that in the warm water group. In addition, the blood pressure of women in the cold water group also decreased at rest and their heart rate increased during exercise. All kinds of evidence show that their physical condition is better than that of warm water group. When the body temperature exceeds 40℃ during exercise, you will be tired. Cold compress can cool down and prolong exercise time. Masaaki Sugita, a professor in the Department of Physical Education of Japan Sport University, also pointed out that the key to effectively improve athletic ability is to lower deep body temperature. Originally, when the human body is exercising, its body temperature will gradually increase. As long as it exceeds 40℃, the body will give an alarm like a fever and reduce the activity. Based on the above principle, as long as the peripheral parts such as cheeks, palms and soles are cold-pressed before or during exercise, when the blood in these parts flows back to the heart, the whole body temperature can be reduced and the time for the deep body temperature to climb to 40℃ can be prolonged, so that the exercise time will naturally become longer and the amount of exercise will also increase. At this time, some people may ask, if cold compress is applied to the neck, groin, armpit and other places where large blood vessels pass, is it faster to lower the deep body temperature and improve the exercise ability than cold compress on the palm? Professor Sugita said that when the thick blood vessels close to the brain and heart rapidly cool down, the thermoregulatory center of the brain will receive a warning that the environment is too cold, but it will start to generate heat and raise the temperature. Therefore, the deep cooling of thick blood vessels is not as good as the effect of ice on limbs with heat dissipation function. However, Professor Sugita also reminded that if the water temperature is too low or the cold compress time is too long, the blood vessels will contract and the blood circulation will deteriorate, which will make the exercise effect worse. If ordinary people want to try cold compress on their palms to improve the exercise effect, they might as well choose cold water around 10 ~ 15℃ and soak their palms in a basin or hold them in a Potter bottle for 5 ~ 10 minutes, which can also effectively improve your exercise effect.