1, habits that endanger men's health
No.65438 +0 opponent-soft sofa
Medical research has found that if you sit on a soft sofa for a long time, it will seriously hurt men's scrotum belt. Because the normal sitting posture is based on the pelvis.
The scrotum stays "safely" between your legs, but when you sit on the soft sofa, the fulcrum will sink, so that your legs will unconsciously clamp, thus pressing the scrotum and blocking the blood flow.
In this way, toxic substances released by testicles will accumulate in the body, which has a great impact on testicular health. In addition, the supply of nutrients has also been interrupted, and the function of testosterone secretion by testis has also weakened. How can we "effectively produce" sperm? Therefore, remember that soft sofas must not sit for a long time.
The Second Biggest Competitor-Fitness Bicycle
For men to go to the gym, healthy cycling is the first choice for many people, but don't think that the longer you step on it, the healthier your body will be, because if you step on it for too long, it will cause problems such as scrotum wear, stones and even seminal vesicle swelling, which will affect sexual function.
The main reason is that the problem lies in the bicycle stool. Because the stool is not only hard, but also prominent in front, men often accidentally touch the scrotum when stepping on it.
Long-term collision will not only damage the nerves, make the scrotum soft, but also cause the seminal vesicle and testicular reticulation to swell. The most serious reason is that the blood circulation is affected, which makes the penis lack of blood supply, thus affecting erectile function.
The Third Enemy-Heavy Metals
I believe everyone is familiar with this sex killer, because heavy metals not only affect sexual function, but also do serious harm to health, especially lead, mercury and cadmium.
Excessive lead, when ingested by human body, will seep into semen or eggs and be stored, which will affect the secretion of reproductive hormones, leading to the decrease of sperm number, deformity and pregnancy rate.
Mercury will cause problems such as decreased desire and inability to lift it, and in severe cases, it will make men infertile. Cadmium can affect the secretion of sex hormones and cause damage to liver and kidney. How can it be interesting?
The fourth enemy-cigarettes
"Smoking is harmful to health" also has a negative impact on desire. The reason why smoking will lead to a decrease in desire is because harmful substances contained in smoke will harden blood vessels and hinder blood circulation, which may not be lifted.
Even if "Good Luck" doesn't have this phenomenon, medical research also points out that smoking has an effect on penis, which will make it straight and bend, affecting normal sexual life. For women, smoking has an impact on menstrual stability, so it is better to smoke less.
These are the four public enemies of men's health that Bian Xiao introduced to you. Are some people suddenly regretting that their health has been defeated by them? Especially nowadays, many people like riding bicycles, so how to ride bicycles is correct?
2. How to ride a bike correctly?
Correct posture:
First of all, keep the correct posture when riding a bike, and don't damage the physiological structure because of riding for a long time.
The correct posture of riding a bicycle should be that the upper body leans forward, the trunk bows upward and the head stretches forward slightly. Hold the handlebar with both hands, and the arms naturally bend to support the upper body.
Sit firmly on the seat with your hips. Make a pedaling cycle with your legs at about 100- 170 degrees, and transfer the force to the pedal through your feet, with smooth and powerful movements.
Adjust the bicycle structure according to your own conditions.
The height of the frame is determined by the leg length, and the length is determined by the arm length and trunk length.
The height of the car seat can be determined by sitting firmly in the car seat and stepping on it with the heel when the pedal is at the lowest point. At this time, the legs should be just straight, don't bend, and don't jump straight.
The adjustment of seat front and rear and pitch angle is determined by the whole body structure, taking comfort as the premise.
The adjusted seat should allow you to ride in the car. When the crank is parallel to the ground, the knee joint and the pedal should be on a vertical line, and the leg should be slightly bent at the lowest point of the pedal.
Learn the correct pedaling technique: when pedaling, the direction of pedaling force should be consistent with the tangent direction of the pedal motion circle as far as possible, and gradually exert force when pedaling, and the force will increase to the maximum when the crank is parallel to the ground, and gradually decrease when going down.
After the lowest point, the ankles and legs begin to relax, reach the highest point smoothly and relaxed, and then enter the exertion stage. Don't shake your legs from side to side throughout the cycle, and keep them on the same vertical plane.
When traveling for a long time, you should try to pedal with different parts of your feet to master the rhythm and relax your muscles to a certain extent. Don't ride with a high transmission ratio that you can't afford, and don't change the transmission ratio frequently.
Summary: The above small series mainly tells you the four public enemies of men's health, soft sofas, cigarettes, exercise bikes and heavy metals. Bicycle, in particular, is actually the best way to keep fit and keep healthy. You must ride your bike correctly so as not to damage your health!
3. Precautions for riding a bicycle
(1) Repair the bicycle frequently to keep it in good condition. Whether the brakes and bells are sensitive and normal is particularly important.
(2) Bicycles should be of appropriate size, and don't ride children's toy cars on the streets. Don't ride a cart alone.
(3) Don't learn to ride a bike on the road; Children under twelve should not ride bicycles in the street.
(four) when riding a bicycle, you should drive on the right side of the non-motor vehicle lane and not go backwards; 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 road, 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 comes on.
(6) When riding a bike, don't spread your hands, don't ride with many people, don't climb each other, and don't chase each other.
(7) Don't climb a motor vehicle when riding a bike, don't carry heavy objects, don't ride with people, and don't wear headphones to listen to the radio when riding a bike.
(8) Learn and master the basic knowledge of traffic rules.