Even just lying on the couch can feel like strenuous exercise on very hot summer days. For those of us who still manage to make it outside for a jog or a workout when temperatures are soaring, they often end up experiencing dizziness or nausea. Professor Ingo Froböse of the German Sport University Cologne explains how to take care of your body when exercising on hot days. 1. Look for cooler time slots and places Go for a run in the early morning when the temperature outside is still tolerable, if you can. But the location can make a difference. Running laps or exercising using your your body w…