Interesting. A few months ago I was really ill one day. The night before I had drank heavily, but I think in this case I also got food poisoning from something. Anyway, I vowed to stop drinking that day, and have. What I realized is how much alcohol was affecting me. Even two days after drinking, I feel tired, less enthusiastic and more depressed. What I have found is that now I can exercise routinely (for several months now), where as before I would give up after a few days or weeks of trying. I think it's important for everyone to evaluate what in their lives may be holding them back, even if they don't realize it. Also, want to point out that I am not advocating everyone stop drinking, just that it seems alcohol affects me more so than others.