It was a busy weekend for ambulance crews in Wisconsin. Bell Ambulance reports it responded to 30 percent more calls Saturday than it would normally have to deal with. Eighty-five paramedics were kept rushing from call-to-call. E-M-T crews say most of the calls involved heat exhaustion. The paramedics say it starts with a bad headache, then you stop sweating and your skin turns red. Those are all indications you are suffering a heat stroke and that is a definitely a medical emergency.