Why is it said that people who stick to swimming rarely need to visit the hospital!

Improve cardiovascular function

Swimming plays a significantly important role in improving the cardiovascular system.The stimulating effect of cold water, combined with its heat-regulating properties and metabolic boost, helps enhance blood circulation. Additionally, the pressure and resistance exerted by water during swimming play a unique role in supporting heart function and improving blood flow. Even when swimming at the surface, the body experiences hydrostatic pressure ranging from 0.02 to 0.05 kg per square centimeter. As swimmers dive deeper, the increasing physical conditions further intensify this pressure. Moreover, accelerating swimming speed also amplifies the pressure load, which in turn strengthens the muscular tissues of the atria and ventricles, gradually expanding the capacity of the heart chambers. This leads to a reduction in the heart’s resting rate, allowing the cardiovascular system to operate more efficiently while simultaneously enhancing overall circulation. As a result, resting diastolic blood pressure tends to rise slightly, while systolic pressure decreases, leading to a more favorable blood pressure profile. Importantly, this process also improves arterial elasticity, promoting healthier vascular function.

Preventing hunchback and scoliosis

When swimming, a person lies face down in the water. Thanks to the buoyancy of the water, their body weight is reduced to just a few kilograms—whereas on land, all their organs must support significantly more weight during physical activity. In contrast, swimming places far less stress on the body compared to land-based activities. Moreover, lying flat in the water helps minimize resistance in the circulatory system and reduces the load on supporting muscles and joints.All swimming strokes require full spinal extension, making them highly effective in preventing hunchback and scoliosis.

Improve respiratory function

During swimming practice, both the efficiency of metabolic processes and the cardiovascular system's ability to work optimally depend heavily on an ample supply of oxygen. However, because water presses against the chest and abdomen, making inhalation particularly challenging, specialized experiments have shown that a swimmer’s ribcage experiences pressure ranging from 12 to 15 kg underwater. To ensure the body receives enough oxygen, the respiratory muscles must continuously work against this resistance. Additionally, exhalation during swimming typically occurs underwater—where water is far denser than air—forcing swimmers to exert significant effort just to expel air effectively.Both inhalation and exhalation can increase the contractile strength of the respiratory muscles, thereby enhancing the function of the respiratory system and boosting lung capacity.The average healthy man has a lung capacity of 3,000–4,000 milliliters, while regular swimmers can achieve 5,000–6,000 milliliters.

Good for asthma

Participating in swimming exercises can improve your ability to adapt to water and air temperatures, enhancing your overall physical fitness.Many children with asthma have found relief—and even complete recovery—from their condition—by incorporating swimming into their exercise routines, as it strengthens their overall fitness and boosts their body’s ability to defend against cold temperatures, ultimately reducing the frequency of asthma attacks.

Good for asthma

Participating in swimming exercises can improve your ability to adapt to water and air temperatures, enhancing your overall physical fitness.Many children with asthma have found relief—and even complete recovery—from their condition—by incorporating swimming into their exercise routines, as it strengthens their overall fitness and boosts their body’s ability to defend against cold temperatures, ultimately reducing the frequency of asthma attacks.