Running and swimming are both full-body exercises. Can achieve the effect of full-body exercise. But they want to exercise in different parts of the body. For running, whether running fast or jogging, we need to keep our legs on the ground and our arms will always swing back and forth. Because the power point of running is in the legs and waist, and the arm is only an auxiliary function, it is said that the effect on stovepipe is the most obvious. For swimming, no matter what swimming posture, arm strength is the main driving force of swimming, and the legs become auxiliary movements, especially freestyle, and arm strength accounts for a large proportion, so swimming has the most obvious effect on reducing arm fat.

In terms of weight loss efficiency, the speed of burning fat is basically the same, but there is still a certain gap in the speed of burning body fat because of the different environment. The temperature of swimming pool is generally around 25℃, while the normal temperature of human body is around 37℃, so when swimming in water, there is a certain gap between body temperature and water temperature, which will consume more calories. For running, it is generally to maintain normal physical standards. If both exercise at the same time, the weight loss effect of swimming will be better. So generally speaking, swimming is better than running to lose weight.