It takes a few weeks of consistent swimming to see noticeable changes in your body. Start with just two or three sessions per week. Once you see some results, you can increase your training frequency to three or four.
To maximize the benefits of swimming, aim for a workout schedule that is consistent and reaches its goal over six to eight weeks. It helps to be disciplined and to keep up with your routine.
However, this depends on your starting body fat percentage, the intensity and frequency of your workouts, and your end goals. Some swimmers will see results as fast as three weeks. In the meantime, others may take longer.
So, in general, everything depends on your goals and body composition. Ideally, you should aim to reduce fat by 0.5 to one lb a month. But this will depend on your fitness level and dietary habits. In the long run, you can achieve your desired body in just a few weeks to a couple of months. But the key is to be consistent and persistent. The more you swim, the more calories you burn.