If the weather is really hot and you stayed under a blanket and sweat a lot , is that good or bad for you?

Blanket when hot: My question is why do you need a blanket when it is really hot.There is really no reason to use a blanket when the weather is really hot and temperature of your surrounding is hot as well , like no airconditioning.It is normal to sweat a lot under blanket when it is hot.It can cause loss of water and electrolytes and should be replaced by salt containing fluids.It is not good,may cause dehydrati