Recently, I exercised in a gym with a swimming pool and found that when there are few people, I can only swim back and forth at my own body speed. When the number of people increases, they often have to avoid waiting for people. A small swimming pool 8 meters wide and 20 meters long is crowded when there are about 6 people or more and there are no lanes.

There are many swimming pools in California, and there are also many training people in the swimming pools. It is found that their swimming pool has some concise rules of use, which is especially beneficial to improve the order and safety of the swimming pool, and at the same time, it can let more people swim in different areas of the same swimming pool or conduct water polo and diving training.

These rules are actually very simple, that is, (1) divide the swimming pool into lanes with a width of about1.5-2.0m or suitable diving areas and water polo areas; (2) Children or beginners have separate areas or shallow swimming lanes; (3) Each lane swims in front of the right, and the return journey continues on the right, forming a loop-so that each lane can accommodate 4-6 people to swim in the same direction at the same time according to different lengths.

These rules can be easily moved to these commercial gyms and swimming pools; They can even create a fast lane. As long as there are obvious signs and more swimming lanes are set in the Yi Labao Exhibition Pool, I believe that swimmers can adapt within 1-2 weeks. An obvious advantage is that, like the 8x20 swimming pool mentioned above, more than a dozen people swim in the same swimming pool, which is probably not crowded and certainly safer.