the syndrome is essential in full recovery. A serious late complication of rhabdomyolysis which occurs in 15% of the population is acute kidney injury, and in some cases it can lead to death. Clinical presentation Muscle pain Tenderness Swelling Weakness Bruising Tea colored urine Fever Malaise Nausea Emesis Confusion Agitation Delirium Anuria CrossFit and rhabdomyolysis As CrossFit has become more and more prevalent and popular, this has led to speculation that spikes in rhabdomyolysis cases are related to CrossFit. According to a study performed in the Journal of Strength and Conditioning Research, unless performed incorrectly and in harmful environments, CrossFit presents no serious physical threat to the human body, and research into whether rhabdomyolysis cases and CrossFit are correlated is inconclusive. Prevention Passive recovery, instead of active recovery, is a form of rest that is recommended to be performed by athletes in between rigorous, intermittent exercise. With active recovery, time to exhaustion is much shorter because the muscles are deoxygenated at a much quicker rate than with passive recovery. Thus, if avoiding overtraining means preventing exhaustion, passive recovery or "static rest" is safest. If active recovery is performed during intense exercise, an athlete may find themselves in a state of being overtrained. The gradual variation of intensity and volume of training is also an effective way to prevent overtraining. References Exercise physiology Weight training