The amount of calories burned when swimming varies greatly. Calorie burn is dependent upon the size of the person swimming, the type of stroke used and swimming efficiency. For example, a person swimming for one hour could burn up to 400 calories.
The amount of calories burned during and after exercise depends on the person's metabolic rate. The metabolic rate is the speed at which the human body burns calories. It is possible to increase metabolism through regular exercise and increased daily activity. For somebody new to exercise, swimming is an excellent way to get started as there is less impact on muscles and joints. It is also great exercise for someone overcoming illness or injury.