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[[Image:Soldier running in water.jpg|thumb|right|150px|[[United States Marine Corps|U.S. Marine]] emerges from the water upon completing the [[swimming]] portion of a [[triathlon]].]]
[[Physical exercise]] is the performance of some activity in order to develop or maintain [[physical fitness]] र overall health. It is often directed toward also honing [[Physical exercise|athletic]] ability or skill. Frequent र regular physical exercise is an important component in the prevention of some of the [[diseases of affluence]] such as [[cancer]], [[heart disease]], [[cardiovascular disease]], [[Type 2 diabetes]] र [[obesity]].
Exercises are generally grouped into three types depending on the overall effect they have on the human body:
* Flexibility exercises such as [[stretching]] improve the range of motion of [[muscle]]s र joints.
* [[Aerobic exercise]]s such as [[walking]] र [[running]] focus on increasing [[cardio]]vascular endurance.
* [[Anaerobic exercise]]s such as [[weight training]] or [[sprinting]] increase short-term muscle strength.
Physical exercise is considered important for maintaining [[physical fitness]] including healthy weight; building र maintaining healthy bones, muscles, र joints; promoting physiological well-being; reducing surgical risks; र strengthening the immune system.
Proper [[nutrition]] is at least as important to health as exercise. When exercising it becomes even more important to have good diet to ensure the body has the correct ratio of macronutrients whilst providing ample micronutrients, this is to aid the body with the recovery process following strenuous exercise.
Proper rest र recovery is also as important to health as exercise, otherwise the body exists in a permanently injured state र will not improve or adapt adequately to the exercise.
The above two factors can be compromised by psychological compulsions ([[eating disorders]] such as [[exercise bulimia]], [[anorexia nervosa|anorexia]], र other [[bulimia]]s), misinformation, a lack of organization, or a lack of motivation. These all lead to a decreased state of health.
[[Delayed onset muscle soreness|Delayed Onset Muscle Soreness]] can occur after any kind of exercise, particularly if the body is in an unconditioned state relative to that exercise.
==स्वस्थ रहने प्रयासहरु==
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