Believe I got heat exhaustion past friday (inside of building with no air conditioner, high temperatures, high humidty, hot air from fans)...been resting all week..do feel light headed after being the heat for a while walking around..and also just did about 4 minutes of light cardio and felt intense headache, light=headness feel better now.. ...how long before body becomes adjusted..? I didnt sweat profusely as heat exhaustion states, but rather stopped sweating as heat stroke , but I didn t have any of the serious affects of heat stroke...pass out, etc...just light headness, headaches ..