I am swimming to lose weight, and I have always maintained my ideal body shape, and the effect is quite good. I have been swimming for more than 30 years (there will be some delays in special circumstances, but I still swim more), and I swim about 1 hour every day (winter swimming can't last that long, depending on the water temperature and physical endurance), so I still insist on winter swimming. Swimming outdoors to lose weight in winter is particularly fast, because the water temperature is low and it consumes more calories, generally at 60.
Swimming is the key to lose weight. If you can't rest when swimming, or go swimming or playing with water, then swimming is definitely ineffective. Any exercise to lose weight is a long "project", and losing weight is imminent. We must insist on combining various postures, such as breaststroke, freestyle, backstroke, butterfly and snorkeling. You can also create your own posture according to your own situation and form different sports combinations, so that you can exercise more comprehensively and swimming is not boring.