Teetotaler wrote:
Are there any reasons why an athlete should give up a daily glass or two of wine or daily beer in order to improve training? Or would the benefits be nonexistent or not significant?
Lots of opinions but no facts. There is, in fact, little to no research on this...for good reason (it's kind of a waste of money to fund research on such a topic). Heavy alcohol consumption has been shown to have no effect on cardiovascular performance the next morning, although it did lower leg power (although the subjects were out drinking late, and certainly had bad sleep, so that may have been the culprit). At any rate, leg power recovered by day 2.
Yes, alcohol can affect sleep quality, gut chemistry, electrolyte balance, and glycogen uptake, but these are in the just-after-drinking period, and the effects go away quickly. There is no justification to say that moderate alcohol consumption has any measurable effect on long-term training. If your liver is acutely damaged, obviously that could have a derogatory effect. But I'm interested for someone to point out the chemical or biological mechanism and then it's connection to long-term training, fitness, or performance.
Is alcohol good for you? Of course not. But that isn't the same question.