Actually, speaking only for my body and not anything scientific, that pretty much is the difference, for me. The ones that wake me up at night are electrolytes (usually magnesium, sometimes calcium). The ones I get during an event are mostly unaccustomed use, although I do supplement electrolytes during a long run/ride just to avoid hyponatremia, which I'm very prone to a mild form.



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I agree with the others that it's very fun and exciting to watch your progress and enthusiasm develop. (Let's hope no one hangs you from a ceiling any time soon! lol)
Jul 2013 - Genesis Croix de Fer
2007 - Giant Cypress hybrid