首页
登录
职称英语
[originaltext] In winter, people might lessen their outdoor exercise. The da
[originaltext] In winter, people might lessen their outdoor exercise. The da
游客
2025-01-25
7
管理
问题
In winter, people might lessen their outdoor exercise. The days get dark earlier, and it can be very cold! These conditions can make it harder for some of us to get outdoors for exercise. However, cold days can be perfect for outdoor workouts! There are at least three important health benefits to cold-weather workouts.
1. The body works harder in cold weather.
Health experts at the Medical University of South Carolina say the body must make extra energy to keep warm in low temperatures. This means the body is burning more calories and fat.
Your lungs also may work better in cold weather. Researchers at Northern Arizona University in Flagstaff found some interesting results in a study of goats.
Yes, I said "goats." But still, their results were pretty interesting.
The scientists looked at how cold-weather activity affected goats. They found that "during the three coldest months, the sedentary but cold-exposed goats experienced a 34% increase in maximal oxygen uptake and a 29% increase in running speed." When temperatures increased in the spring, both oxygen uptake and running speed of the goats decreased.
2. Regular cold-weather exercising may help the immune system.
The winter season is also cold and flu season. Making outdoor exercise a usual part of your workout may help you avoid both colds and the flu. It may strengthen your body’s defense system.
The Mayo Foundation for Medical Education and Research found that winter workouts can cut your risk of getting the flu by 20 to 30 percent.
3. Exercising outdoors in cold weather may help your mental health.
Some people who suffer from "winter blues", or Seasonal Affective Disorder, may benefit from going outside to exercise in the fresh air and sunshine.
An outdoor workout increases exposure to sunlight. Sunlight helps the body produce vitamin D. And vitamin D produces hormones that brighten your mood.
Dangers of a cold-weather workout
So, there are several health benefits of exercising outdoors in very cold weather. But there are also dangers.
1. Frostbite is one of the most common.
Edward Ward is a doctor at Rush University Medical Center. He explains how frostbite happens.
"When the air temperature drops below zero especially factoring wind chill, things freeze. And that includes the fluids within your fingers or your toes, nose, ears. Anything that’s exposed to that wind chill can be affected by frostbite."
Protecting your fingers, toes, ears and nose is very important. Cold winds affect these parts of the body more quickly than other parts.
Christopher Sampson is a doctor with University of Missouri Health Care. He explains that frostbite can happen rapidly—in less than 30 minutes.
"With frostbite, people can start experiencing symptoms pretty rapidly. On average with mild winds and cold temperatures, it can occur in as less than 30 minutes. With extreme cases, when it’s very, very cold and winds are very, very strong, sometimes frostbite can develop in as little as 5 minutes."
The beginning of frostbite is called "frostnip."
Experts at the Mayo Clinic explain that "with this mild form of frostbite, your skin pales or turns red and feels very cold. Continued exposure leads to prickling and numbness in the affected area. As your skin warms, you may feel pain and tingling. Frostnip doesn’t permanently damage the skin."
But, frostbite can. It can even lead to loss of tissue and limbs.
2. The most serious danger is hypothermia.
Hypothermia is when the body temperature has fallen below 35 degrees Celsius or about 95 degrees Fahrenheit. This happens when your body cannot produce enough energy to keep the body warm enough.
Hypothermia can kill you. There are several signs to watch for before it is too late.
选项
答案
In winter, people might lessen their outdoor exercise. However, cold days can be perfect for outdoor workouts! There are at least three important health benefits to cold-weather workouts. First, the body works harder in cold weather, which means the body is burning more calories and fat. And your lungs may work better in cold weather, too. Second, regular cold-weather exercising may help the immune system. The winter season is also cold and flu season. Outdoor workouts may help you avoid both colds and the flu and strengthen your body’s defense system. Third, outdoor workouts may help your mental health. They increase exposure to sunlight, which helps the body produce vitamin D. And vitamin D produces hormones that brighten your mood. But there are also dangers. Frostbite is one of the most common. Frostbite can even lead to loss of tissue and limbs. And the most serious danger is hypothermia, which can kill you. (155 words)
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3927522.html
相关试题推荐
Nooneknowsexactlyhowmany【C1】______peoplethereareintheworld,butes
Nooneknowsexactlyhowmany【C1】______peoplethereareintheworld,butes
Nooneknowsexactlyhowmany【C1】______peoplethereareintheworld,butes
[originaltext]Whichismorepopular—coffeeortea?IfyouareonTeamC
[originaltext]Areyouacatpersonoradogperson?Peoplearoundtheworld
Beingassertiveisbeingabletocommunicatewithotherpeopleclearly.Ify
Beingassertiveisbeingabletocommunicatewithotherpeopleclearly.Ify
Beingassertiveisbeingabletocommunicatewithotherpeopleclearly.Ify
Beingassertiveisbeingabletocommunicatewithotherpeopleclearly.Ify
Beingassertiveisbeingabletocommunicatewithotherpeopleclearly.Ify
随机试题
Dovesflyingindaylightusethesunforguidance.Butthestarsareobviouslyt
[originaltext]W:Goodmorning,Dr.Harley.Thankyouverymuchforcomingonou
NADPH主要来源予以下哪种途径A.氧化磷酸化B.糖酵解C.柠檬酸循环D.磷酸戊
企业发生盘盈的固定资产,应在“待处理财产损溢”账户核算。()
在无领导小组讨论评价与总结时,考官应该着重评估被评者的表现包括()。A.参与程
下列导致工期延误的原因中,发包人可据以向承包人提起索赔的是()。A.设计变更
病案具体内容要求用何笔填写A.蓝圆珠笔 B.蓝黑墨水笔 C.铅笔 D.红色
我国国务院金融监督管理机构跟踪发现某银行近期吸纳了一笔巨额存款,且经调查该账户为
平均主义分配的单位,员工容易产生()。 (A)社会促进(B)社会懈怠
细胞色素在呼吸链中传递电子的顺序是A.a→a3→b→c→c1 B.a3→b→c
最新回复
(
0
)