I've recently taken up running to lose some weight but like I always have in the past, I have problems keeping cool. I've taken to running late in the evening when it's cooler but I still overheat, my core temperature rises and I start dripping quite quickly even though my surface temperature is quite cool. It feels weird being cool on the outside but overheating on the inside. This causes me to sweat a lot making me cooler on the surface but it has no effect on cooling me internally. I only cool down after the run and I've been sitting in front of a fan for 20 minutes. It's very uncomfortable and I could cope with it if it wasn't for the fact that it feels like I'm covered in hot acid which has the effect of making me feel like I'm wrapped in a prickly wool blanket. This time of year it happens when I just take the dog out for a walk. I drink all the water I can and it doesn't seem to make any difference what I wear. Any suggestions please before I give up the running again. Thanks.