hunting is a sport, and should be prepared for as such. I agree that this study is lacking depth, and note that the heart rate increases are not extremely high anyway. If someone has an actual heart attack dragging a deer, they would likely have had it soon enough anyway. I'm not denying it happens, what I'm saying is that if we check our health, and work on improving it, we'll likely know if we are in danger of having something like that happen. The American Heart Association has very easy to find and follow guidelines that it is wise to follow.