Running
Running is by definition the fastest means for an animal to move on foot. It is defined in sporting terms as a gait in which at some point all
feet are off the ground at the same time.
Running is a form of both anaerobic exercise and aerobic exercise.
During running, the speed at which the runner moves may be calculated by multiplying the cadence (steps per second) by the stride length.
Running is often measured in terms of pace or minutes per mile or kilometer.
Running is a complex, coordinated process which involves the entire body. Every human being runs differently, but certain general features of
running motion are common.
Leaning forward places a runner's center of mass on the front part of the foot, which avoids landing on the heel and facilitates the use of
the spring mechanism of the foot. It also makes it easier for the runner to avoid landing the foot in front of the center of mass and the
resultant braking effect.
Running burns 50 percent more calories per mile than walking.
Jogging is a vaguely-defined term which generally refers to a type of slow running, previously called "roadwork" when athletes in training,
such as boxers, customarily ran several miles each day as part of their conditioning.
Perhaps the most basic of athletic contests, running races are simply contests to determine which of the competitors is able to run a certain
distance fastest. Today, competitive running events make up the core of the sport of athletics.
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