<unk>  occurs when a person exceeds their body's ability to recover from strenuous exercise.<unk>  can be described as a point where a person may have a decrease in performance and plateauing as a result of failure to consistently perform at a certain level or training load; a load which exceeds their recovery capacity. People who are overtrained cease making progress, and can even begin to lose strength and fitness.<unk>  is also known as chronic fatigue, burnout and overstress in athletes. It is suggested that there are different variations of<unk> , firstly monotonous program<unk>  suggest that repetition of the same movement such as certain weight lifting and baseball batting can cause performance plateau due to an adaption of the central nervous system which results from a lack of stimulation. A second example of<unk>  is described as chronic overwork type training where the subject may be training with too high intensity or high volume and not allowing sufficient recovery time for the body. Up to 10% of elite endurance athletes and 10% of American college swimmers are affected by<unk>  syndrome (unexplained underperformance for approximately 2 weeks even after having adequate resting time).
Overtraining
Deconditioning
Preconditioning 
Allostatic load
Stress shielding
Homeostasis
Neuraxial blockade
Meditation