Sounds like heat exhaustion, not heat stroke. Drink plenty of water. A wet cloth wrapped around the neck and running cool water on your wrists will help you cool down. But keep in mind, these should be done before you get to the point of feeling woozy and dizzy. Once you get to heat exhaustion, you are much closer to the dreaeded heat stroke. Best to just take it easy for a while. http://www.emedicinehealth.com/heat_exhaustion_and_heat_stroke/page3_em.htm