Physical activities are closely related to our daily life. If you seize every opportunity and make use of the conditions available to you, you can do exercise wherever and whenever you like. You can integrate physical activities into your daily life by stair climbing, walking, cleansing the car or doing housework, etc. Moreover, there is a great variety of physical activities for people to choose from according to their interests. Exercises can be divided into three main categories in terms of their health benefits.