check it: I have recently heard that lactic acid is a major cause of muscle soreness. And what contains a TON of lactic acid? Milk (or any other dairy product.) I drink right around one gallon of milk a day so this make sense to me. I can't do a whole lot of physical activity without "feeling the burn" for several days to follow. Take for example riding my 3 wheeler: 4 hours of riding= at least one full day that I cannot even walk, and at least 3 days after that I am in extreme pain anytime I move my legs. I don't drink much of anything but milk (nonfat to boot) and don't plan on changing that. But... if that is what is causing me all of this pain, then something needs to change. Has anyone else ever heard of this sympton from high amounts of lactic acid in thier diets or is it all just crap and I'm just really that out of shape? If it is true, is there anything that can be done to counter the affects of it? On a side note, everyone says that milk (or calcium) is so great for your bones right? Then why is it that with so much calcium in my diet that I am expected to need both hips replaced within the next 5 years (I'm only 19 and already had to have both hips pinned when I was 12) ARRRGGHHH!!!