Hands and feet become wrinkled after soaking in water

Many people often come into contact with water because of their work and hobbies. Prolonged contact with water will cause wrinkles on their hands and feet due to soaking in water. Most of these changes are related to personal skin. This will happen if you soak in water for a long time. As long as you pay attention to physical exercise in your daily life, reasonable improvements can be made.

Fingers wrinkle when soaked in water, which actually indicates this

According to the French health website "futura-sciences", researchers at Newcastle University in the UK concluded that the formation of bubbles when fingers are immersed in water is a choice made by humans, which can help humans better grasp slippery objects.

No one can escape the fate of wrinkled fingers after soaking in water for a long time. It has long been believed that wrinkling is caused by osmosis, which causes water to enter the epidermis of the fingers. In 2011, American scientists overturned the above view and proposed that this process is actually controlled by the nervous system. When fingers are soaked in water for a long time, the nerves will cause the diameter of the blood vessels at the fingertips to decrease. At this time, the surface area of ​​the skin remains unchanged, so grooves appear on the fingers. Scientists can't help but wonder if this is the same principle as in car tires, where grooves improve the grip of human fingers on wet surfaces.

To this end, British researchers conducted an experiment: as required, the 20 volunteers participating in the experiment needed to pick up 39 glass balls and 6 sinkers with their right hand, pass them through a small hole, pick them up with their left hand, and put them one by one into a new box. The experiment was conducted on a table or in a water tank. Volunteers operated with dry hands or soaked their hands in 40°C water for 30 minutes, completing the experiment after their fingers became wrinkled. The results showed that there was no difference in performance when the subjects picked up dry glass balls, but when picking up wet glass balls, using wrinkled hands to complete the task saved an average of 12% of the time compared to using dry hands. This result seems to confirm previous speculation about adhesion.

However, some other scientists speculate that wrinkling of fingers when exposed to water is the result of natural selection. The grooves increase the adhesion of fingers, improving humans' ability to catch fish with their bare hands, thereby increasing the possibility of human survival in nature.