It has been shown that lack of adequate sleep can decrease the reduce tolerance to training, alter mood, increase perception of fatigue and negatively affect the physiological mechanisms responsible for adaptation from the stresses of training. Hormonal secretion during sleep is one of the most important factors influencing recovery; after all, the purpose of sleep is to induce a state of recovery in the body. Anabolic (muscle-building) hormone concentrations and activity increase during sleep while catabolic (muscle-wasting) hormone concentrations and activity decrease. Disrupted or shortened sleep will negatively influence the effects of these anabolic hormones .
It was decades later that the secret behind this spectacular success became known. The East German Sports Federation had, with the help of the Stasi, used Performance Enhancing Drugs or PEDs to ensure that their athletes gained international recognition by winning the Olympic events. This systematic plan had been initiated in 1974 as a means to guarantee international glory through the achievement of gold medals at the prestigious sporting event. Oral- Turinabol , a testosterone derivative was used extensively to improve muscle mass and cut down recovery time. This allowed the German athletes to train harder and longer than other world athletes.