游泳本身是健康的。室内游泳池对健康的损害远小于思维极端

对生活的损害。

这个世界观点五花八门，完全彻底安全的运动根本不存在。这篇文章也说——

Overall, researchers say, the benefits of swimming for exercise outweigh the risks. As the authors of the Quebec City study of youthful swim racers were careful to point out, only one of the 72 swimmers they studied smoked and none were obese, making them statistical anomalies among the young. “Breathing problems do sometimes develop,” Miller says. “But with rare exceptions, they can be controlled. Swimming remains, in general, very good for you.”