1, swimming is easier to run because water has buoyancy. Although 1000m takes about 20 minutes to swim and only three or four minutes to run, 1000m is much better than swimming, but it consumes less calories than swimming.

2, because it is easy, it is easier to persist;

3. Swimming is safer than running, and it is basically harmless to the body;

Swimming is all-weather, and running has certain requirements for the weather.