How long you should exercise every day depends on your exercise purpose. If the purpose of exercise is to lose weight and fat, you can do moderate-intensity aerobic exercise for a long time, and it is recommended to do it for 40 minutes to 60 minutes at a time; The aerobic exercise time after strength training can be slightly shorter, about 30 minutes; If the exercise is just to gain muscle, you can do more strength training for about 30 minutes at a time.

Expanding information movement, an activity involving physical strength and skills, is bound by a set of rules or habits and is usually competitive. There has never been a cosmic movement in time and space, and the cosmic movement has given birth to everything. There is no object that does not move, and there is no movement that can leave the object.

Movement is conservative, that is, it can neither be created nor destroyed, but its concrete forms are diverse and can be transformed into each other, and the total amount of movement remains unchanged during the transformation. In geometry, the motion of a rigid body is described as the mapping of a plane to itself, and the distance between any two points A and B is the same as the distance between their images A' = m (a) and B' = m (b). In philosophy, the definition of motion is the linear migration of things in time and space.

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