八年级自行车优点英语作文

发布网友发布时间：2022-05-01 09:00

共1个回答

热心网友时间：2022-06-27 03:26

　　(1) simple. Cycling does not need this kind of sport is like other sports as deliberately prepared. Limited time, limited speed, limited places, every non-motorized vehicles are places that you can exercise the freedom to play, you can go to ride alone, you can also go hand in hand; you can go laden with fishing rod sub, but also piggyback my portfolio board to stroll; you can go for a walk by the way friends, you can test the complete schele of ten kilometers per hour.
　　(2) environmental protection. Now the air quality is getting worse, which is very important reason is that a large number of vehicle exhaust emissions, cycling is no exhaust, can influence the lives of our Blue Sky Project.
　　(3 bike benefits
　　Cycling is a very common in our country and is very convenient means of transport, when people have to work and outings often use it. According to the results of recent studies show that cycling and running, swimming, is one of the most able to improve people's enrance cardio workout.
　　In other countries, cycling fitness can be said to be in the ascendant. In the United States, according to "US News And World Report" revealed that there are 20 million people in the United States Cycling Fitness, and the number of participants is increasing, in 1987 increased by 30% compared to 1986, 1988 to increase off than in 1987 36%. France, Germany, Belgium, Sweden and other countries, but also to ride a bike "day trip" fashionable sports tourism recreational activities, attracting thousands of people took part.
　　Sports experts pointed out that e to the special requirements of cycling, arms and torso are mostly static nature of the work, mostly legs dynamic work, in the redistribution of blood, the blood supply of the lower extremities more, also on the basis of changes in heart rate pedaling movement speed and unlating terrain and different. Inside the body urgent need to replenish nutrients and discharge waste, so the heartbeat often than usual increase 2 to 3 times. This repeated practice, you can make advanced cardiac heart bigger, stronger cardiac contraction, blood vessel wall elasticity increased. Thereby increasing the amount of pulmonary ventilation, vital capacity increased pulmonary respiratory function improved.