when you get an unwelcome heavy sweat going, like after you chased the bus for two blocks, in the summer, wearing a three piece suit, that can be very impractical, it will ruin your whole look for a good 30 minutes. protip, just take out your bank card and like a squeegee, simply squeege the sweat away from off your back and chest and face, scrape it off, just like you do when cleaning windows. you will be high and dry with a couple of sweeps and as for the card, just shake it off dummy. this could make you a little warm being that the sweat is meant to cool you off. youre welcome.