 Never miss the morning news watch. It is a little bit cumulative, meaning that if you start to dehydrate a little bit one day, that can carry over into the next day. Dr. Jeff Ripperda. Do not push through. Just about every case of severe heat-related illness I've seen, every case of heat exhaustion, vast majority of cases of heat stroke. Generally, somebody who was doing a job outside, they started to feel kind of sick, and they just didn't want to stop doing that job.