I sweat...a lot. My feet sweat so bad that if I don't use Drysol (prescription strength anti-perspirant 20-30 times stronger than over the counter stuff) to prevent them from sweating the sweat glands rupture due to over activity (Then I have to the other prescription for Cortizone cream to keep my feet from cracking and bleeding). All my life I struggled with my feet freezing in even mildly cold temperatures...it's one of th reasons I gave up skiing when I was younger. Managing the sweat helped an amazing amount.