② Cycling can improve cardiopulmonary function, exercise lower limb muscle strength and enhance overall endurance.
③ Riding a bicycle can prevent brain aging and improve the agility of nervous system, which is contralateral exercise. Alternate pedaling of two legs can develop the function of left and right brain at the same time and prevent premature aging and negligence.
Riding a bicycle is of great benefit to relieving psychological stress and preventing depression.
⑤ Moderate riding can stimulate the secretion of estrogen or androgen and enhance sexual ability.
Disadvantages of cycling: ① In fact, there is no harm in cycling, but if you ride too much, there are many disadvantages, and the most controversial one is the impact on sex. Although the benefits of cycling mentioned above mentioned that moderate cycling can stimulate the secretion of estrogen or androgen, excessive cycling will have a bad effect on men's prostate, because if riding for a long time, it will cause local blood circulation disorder and affect the functions of testis, epididymis, prostate and seminal vesicle.
(2) For women, because the female pelvis is wide, the pudendal-femoral groove and its nearby soft tissues are easy to be rubbed, so women who ride bicycles all the year round, especially those who carry people and increase their load, are prone to pudendal-femoral groove tumors.
③ Excessive riding will cause injuries to cervical vertebrae, lumbar vertebrae and knee joints. The symptoms of such injuries are mainly pain, mainly due to riding posture.
Safety precautions for cycling 1. Always check your bike to keep it in good condition. Whether the brakes and bells are sensitive and normal is particularly important.
2. The size of the bicycle should be appropriate. Don't ride children's toy cars in the street, and don't ride bicycles in the street.
3. Don't learn to ride a bike on the road; Children under twelve should not ride bicycles in the street.
4. Riding a bicycle should be on the right side of the non-motor vehicle lane and not retrograde; When turning, don't make a sharp turn, slow down in advance, see the surrounding situation clearly, and then turn with a clear gesture.
5. After crossing the intersection, slow down and pay attention to pedestrians and vehicles. Don't run the red light, stop the red light and wait until the green light is on.
6. When riding a bicycle, don't spread your hands, don't ride together, don't climb each other, and don't chase each other.
7. Don't climb a motor vehicle when riding a bike, don't lift heavy objects, don't take people by bike, and don't wear headphones to listen to the radio when riding a bike.
8. Learn and master the basic knowledge of traffic rules.