Being a weightlifter is different then being obese how? Imagine being 400 punds and trying to stand up... But i digress. If you move to india and bathe in the ganges river, how long will your health be super duper? Yeah, no. We can nit pick for centuries about the fine points of horse biology, OR we can agree that horses smell way better then human beings, and they would not touch bad water. Now this is of course in a survival scenario, not every day consumption. Lul.