I agree with @TonyaM and is basically what I believe, there is no debate over the benefits of exercise. There are alot of people who did not have lumps however, I was detected early 1st diagnosis due to routine mammos a good 5yrs after starting them. Didn't matter how fit and healthy I was clearly. Think we need to be careful what we say about exercise and in particular prevention....I have known a few very fit people who have passed away due to BC and can be upsetting to so many...to be told if only you exercised ummm they did...I did...before and after. Lets just leave it at exercise is beneficial for so may reasons and leave it there.