Even without sensation in your back, WheelAir will still keep you feeling cool. Overheating can cause fatigue, muscle cramps, spasms, nausea and other issues that you feel throughout your body. As your body cools down with WheelAir, the feeling of wellness should return, which is how you’ll know its working. The airflow helps reduce body temperature through a process of convection, conduction, and evaporation heat loss.