Advantages and Disadvantages of Cycling: Bicycle structure, bicycle size, bicycle speed, bicycle selection guide, what are the bicycle races? Bicycles, also known as bicycles or bicycles, are usually small land vehicles with two wheels. British bicycles. In China, Taiwan Province Province and Singapore, it is usually called "bicycle" or "bicycle"; In Hong Kong, Macao and other places, Cantonese is usually called "bicycle"; In Japan, it is called "self-transfer". In China, 1866, the Qing Dynasty sent its first overseas delegation. Among them, Zhang Deyi, a teenager aged 19, used the word "bicycle" in his travel notes, so the word "bicycle" first appeared and has been used ever since.
Advantages and disadvantages of cycling Advantages and disadvantages of cycling:
1, develop the brain and improve physical fitness. Because cycling is an opposite movement, it can improve the agility of the nervous system.
2. Lose weight and prolong life. Because in cycling, the human body carries out periodic aerobic exercise, so that the exerciser can effectively consume more calories, and long-term persistence can achieve significant weight loss effect. Cycling is a kind of exercise to enhance cardiovascular and cerebrovascular functions and cardiopulmonary functions.
3. Reduce stress. Regular exercise helps to relieve psychological stress and prevent depression.
Disadvantages of riding a bike:
1, spinal and lumbar injuries. The main symptom of this injury is pain. Such as shoulder pain, neck pain and back pain.
2. Joint injury. The main symptom of this kind of injury is pain. There are mainly pain in the upper knee and pain in the back of the knee.
3. Upper limb injury. This kind of injury is mainly due to long-term compression of upper limbs. If the movements of the arms do not change much in a certain period of time, the blood circulation of the upper limbs will be relatively reduced, which is of course unfavorable to the body.
4. "Influence on sex". Cycling will oppress perineum, affect local blood circulation, cause pudendal discomfort, and even cause prostatitis and impotence.
3 Bicycle type 1, commuter (ordinary) bicycle: a single-speed bicycle used by ordinary people to commute, which adopts a standing posture with bent legs and has the advantages of high comfort and long-term riding fatigue. Nowadays, many people have bought electric bicycles to facilitate their travel.
2. Mountain bike: Mountain bike is suitable for cross-country, with good stability and low tire pressure, which ensures its safety when riding in mountainous areas, and has strong overall strength and strong impact resistance, and is less likely to be damaged when riding strongly than ordinary bicycles.
3. Dead flying bicycle: More accurately, it is "fixed bicycle". Compared with our daily "movable flywheel", everyone calls its flywheel "dead fly".
4. Folding bicycle: It is a kind of bicycle designed for easy carrying and loading into the car, and generally consists of a frame folding joint and a vertical plate folding joint.
Structure of bicycle 1 Guiding system: It consists of handlebar, front fork, front axle and front wheel. The rider can change the driving direction and keep his body balanced by manipulating the handlebar.
2. Drive (transmission or walking) system: It consists of pedal, central shaft, sprocket, crank, chain, flywheel, rear axle and rear wheel. The pedaling force of people's feet is driven by pedals through crank, sprocket, chain, flywheel, rear axle and other parts, thus making the bicycle move forward continuously.
3. Brake system: composed of brake parts, the cyclist can control the brake at any time to slow down and stop the running bicycle and ensure the driving safety.
5 bicycle size For most people, the choice of bicycle size is very important. In fact, the choice of bicycle size is very simple. The size of your bike is determined by your height, but it is also limited by other factors. Physiological data of each person (such as arm length, calf and thigh length, flexibility, etc.). ) are all different, which will affect the size of your frame. The following table will give you some guidance. If you are between two sizes, we suggest that you use a smaller frame. The small frame can be adjusted to suit your riding. Comfort is an important factor affecting ride quality. Here are the comparison tables of mountain bike size, city bike size and road bike size for your reference.
6 Bicycle speed Generally, the speed of a bicycle is around 15km/h, and it is not bad to ride a mountain bike at an average speed of about 20km/h. Generally, it takes a lot of effort to get above 20km/h (if you want to keep the speed of 20km/h more easily, it is recommended to use a road bike, hurry up and slow down. However, the use of road vehicles is very limited and requires high road conditions. There are many reasons that affect the driving speed:
1, car types, road bikes, mountain bikes and recreational vehicles will affect people's play to varying degrees.
2, the car condition, the degree of cooperation between transmission devices is good or bad. Whether it is suitable for the rider's body shape.
3. Physical fitness, training level, pace frequency and strength.
4, road conditions, road quality, traffic flow, uphill and downhill, etc.
7 bicycle shopping guide 1. Choice of vehicle type: We can divide the common vehicle types into three categories: mountain bike, road bike and recreational car. Consumers can decide the appropriate model according to their own usage positioning.
2. Choose the size: Choosing the size is related to whether you can adapt to your car for a long time. Just like when we buy shoes, we will give priority to choosing the right size, and so will buying bicycles.
3. Price classification: Bicycle prices vary greatly, ranging from several thousand yuan for cycling to tens of thousands for competition. Everyone should choose according to their actual economic situation and fever.
4. Accessories: the most basic equipment that needs safety, such as helmets, locks and lights, followed by maintenance equipment, such as air pumps, spare tires and simple tools that you carry with you. Learn how to use them in an emergency.
Industry recommended brand Giant Permanent Forever Phoenix Bicycle Pigeon Xidesheng XDS Merida Merida Trek Trinx Dahon Dahon Dahon Dahon Dahon Dahon Dahon Dahon Dahon Dahon Dahon Dahon Dahon Dahon Dahon Giant Bond Fujita Battl E long-distance mountain bike Shimano 30 variable-speed aluminum alloy frame can be locked before and after the bicycle. Oil disc brakes for men and women cross-country bike Phoenix single-speed male and female 20-inch adult men and women leisure folding bicycle road snow black flying pigeon children's bike 3-6 years old bike 2-year-old boy and girl bike princess baby children's cart Xidesheng mountain bike hero 300 new 27.5-inch large wheel diameter Shimano 27-speed aluminum alloy bike 8 What are the bike races 1? Tour de France: The Tour de France is a famous annual multi-stage road cycling race, which is mainly held in France, but it is also often held in neighboring countries (such as Britain and Belgium). Since 1903, it is held every summer, and each race lasts for 23 days, ***2 1 stage, with an average length of more than 3,500 kilometers (about 2,200 miles). The complete timetable varies from year to year, but most of them are around France.
2. Tour de France Italy: Tour de France Italy was born in 1909, and people generally call it GIRO. Like the Tour de France, GIRO was initiated by a news media, LaGazzettadelloSport (LaGazzettadelloSport is similar to Italian French L "equipment-team").
3. Tour to Spain: The tour to Spain begins at 1935 and is held every year from 1955. This is the third largest international road cycling race after the Tour de France and the Tour de Italy.
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