This may be the best way to fight colds and flu:
A foot massage! University of Miami researchers say a 10-minute foot rub can boost levels of virus-attacking white blood cells by 25%. A daily foot rub also lowers levels of the stress hormone cortisol, which weakens our immunity. If your partner isn't into giving you a foot rub, a do-it-yourself 10-minute scalp massage can have the same effect.