Реферат: Swimming History Essay Research Paper Swimming was

through the water. At first you will probably need to have

lessons. Also to swim u need agility and just gravity.

Swimming also requires balance and quickness in some

cases. Not much is needed to know if you want to swim.

Swimming improves heart and lung efficiency, enhances

muscle strength and endurance, improves flexibility, and

reduces stress. It’s easy on the joints, and uses more

muscles than most other forms of exercise. Although

swimming burns a great deal of calories, recreational

swimmers tend to lose less weight than would be expected

from other types of aerobic activity. Scientists say that cold

water removes heat from the body, stimulating appetite to

keep the body warm. Exposure to cold water may

encourage the body to maintain fat stores for insulation. To

lose weight by swimming, its necessary to cut down on the

calories you eat, and to swim fast enough and long enough.

Swimming can burn more than 660 calories an hour when

performed correctly and causes less injuries to joints and

muscles than aerobics or jogging. It takes only three hours

a week of strenuous swimming to improve flexibility,

increase strength and build cardiovascular endurance.

Swimming provides a good aerobic workout if 25% of the

total laps are performed at maximum intensity. However,

only 5% of those who swim do so at an aerobic pace.

Although few doubt the aerobic benefits of swimming,

studies comparing swimming with jogging, results found

that

swimmers lost less body fat than joggers. Apparently

swimming causes an adjustment in how energy is burned,