Quote Dreamer="Dreamer"Cocaine does have performance enhancing effects:
"[iCocaine increases alertness, feelings of well-being and euphoria, energy and motor activity, feelings of competence and sexuality. Athletic performance may be enhanced in sports where sustained attention and endurance is required. Anxiety, paranoia and restlessness are also frequent. With excessive dosage, tremors, convulsions and increased body temperature are observed[/i"
A small snippet from [urlhttp://en.wikipedia.org/wiki/Cocaine[/url'"
Well when Gareth Hock has been found guilty of using cocaine to enhance performance we can discuss that. But he hasnt, he was guilty of using it recreationally, so it is irrelevant.
[iA bitter, white crystalline xanthine alkaloid that is a psychoactive stimulant. An Ergogenic aid used to increase a persons potential for mental or physical labour, A study conducted in 1979 showed a 7% increase in distance cycled over a period of two hours in subjects that consumed the drug compared to control subjects. Other studies attained much more dramatic results; one particular study of trained runners showed a 44% increase in "race-pace" endurance, as well as a 51% increase in cycling endurance, after a dosage of 9 milligrams per kilogram of body weight
A reduction in serotonin levels when caffeine use is stopped can cause anxiety, irritability, inability to concentrate, and diminished motivation to initiate or to complete daily tasks; in extreme cases it may cause mild depression. Together, these effects have come to be known as a "crash". Caffeine dependency with a wide range of unpleasant physical and mental conditions including nervousness, irritability, anxiety, tremulousness, muscle twitching (hyperreflexia), insomnia, headaches, respiratory alkalosis, and heart palpitations.[108[109 Furthermore, because caffeine increases the production of stomach acid, high usage over time can lead to peptic ulcers, erosive esophagitis, and gastroesophageal reflux disease.[110 Caffeine may also increase the toxicity of certain other drugs, such as paracetamol
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a little snippet of information about caffeine there for you.