Because freestyle is the fastest, athletes often use freestyle. Freestyle means that the body is prone in the water, almost parallel to the water surface, paddling backwards by two arms in turn, pumping water from the legs up and down to the rear, and swimming in sideways.
Because the arms move like crawling, it is also commonly known as crawling. This position is the fastest swimming position because it has the smallest head-on lift, good paddling effect, easy coordination, labor saving and the fastest speed.
As far as the existing swimming methods are concerned, backstroke is the most labor-saving, but backstroke is not suitable for rough waters. When breathing in backstroke, the mouth is easy to get water, and backstroke can't see the front. Relatively speaking, backstroke is not safe enough, but it is suitable for swimming fatigue