Swimming lessons are not recommended for babies under/kloc-0. They can play with their parents and feel the tactile stimulation brought by the current.
1~4 years old
It is not recommended to learn swimming at this age. You can try diving, holding your breath, surviving on shore and other courses according to your baby's interest and athletic ability.
Over 4 years old
At this time, the child's sports ability and muscle strength are well developed, and he can officially start to consider learning swimming skills.