Fall and Winter time or the dreaded "flu season" brings cold weather along with all the stuffy noses and boxes of tissues. There is one easy trick you can use this season to prevent common colds and flu's. In Chinese Medicine the immune system is assisted by proper opening and closing of pores. You've heard the old "sweat it out" trick to try and kick the flu. But lets start with preventing it in the first place. Cold Fall and Winter air traps your pores shut, not allowing f