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Sympathetic nervous system overtraining and Parasympathetic nervous system overtraining.
Most of the time it is; however, it can also be the result of injury.
The most common are head injury, leg injury, bike arm's injury, muscle damage and road rash injury.
Like most muscles, the triceps can cramp after a period of exercise, and is usually caused by poor posture, insufficient stretching, or overtraining. Muscles may also cramp as a result of dehydration, or as a result of certain acute medical conditions.
The most common is fatigue, followed by muscle weakness or pain.
A contusion (bruise) would likely result from a sudden blow to the body.
HR is the single most effective indicator of overtraining. If you perform the same activity as you did a few weeks ago and your HR is significantly higher you are probably overtraining. Also, if you feel weaker and less willing to do your exercises you might be. You really have to be a serious athlete to reach this level however. Its not common. Ref: B.S. in Exercise Science from Ball State University :)
In most places, plagiarism is not a criminal act. It can result in criminal charges for fraud if used to deceive. It could result in personal injury charges as well. It can also result in a lawsuit for violation of copyright.
A contusion (bruise) would likely result from a sudden blow to the body.
Severe traumatic brain injury can be caused by several factors. The most common cause of severe traumatic brain injury involves automobile accidents. Falling on the head can also result in severe traumatic brain injury. Other cases include firearms or other weapons penetrating the skull.
Although adhesions can be congenital (present at birth) or result from inflammation, injury, or infection, the vast majority of adhesions form following surgery
the lungs and chest area is where most of the injury is done!!