There is no doubt that swimming is the best exercise you can do. It burns calories and strengthens muscles without impacting upon joints and is a great stress reliever too. A counter current system allows you to use your wooden pool as an exercise pool, massager and regular fun pool! Most systems have a jet sitting about 30cm below the surface of the water. You can vary the flow rate so it suits all the family. Some may want massage or gentle exercise while others want a long distance, ever increasing resistant current! All controls are accessible from within the pool. You can change your mind and easily amend the settings or switch it on or off .