 and something more serious happens, it can be very challenging to your body and really to your overall health. It can create issues within the heart. The heart can handle quite a bit, but there are certain levels that it becomes very challenging. Simon Rigo, who's the director of psychology training at the medical center in New York City, he said there's several limitations to the study. First, it was only done in Sweden. It wasn't done worldwide. So it could have been just the...