It should be mentioned that due to the great buoyancy of water, in waist-high or chest-high water, people's gravity is very small, almost zero, and the resistance felt by stretching their limbs or twisting their bodies in water is 883 times that in air movement, thus mobilizing muscle fibers to coordinate with nerves and achieving the effects of consuming physical strength and burning fat.

On the other hand, as we all know, losing weight mainly depends on body heat rather than sweating. Sweating absorbs heat faster in water than in air, so glycogen stored in the human body quickly releases energy, and it is the turn of fat to play a role. The energy consumed by exercising in water for 20 minutes is equivalent to exercising on the ground 1 hour or more, which can make the body warm up as soon as possible and promote the secretion of slimming protein, so the slimming effect is also obvious.