Another way to enhance the body's response to cold-fighting remedies is to ensure that you feel loved: Social support reduces vulnerability to all types of illness, including colds and flu, by cutting stress. In fact, when exposed to a virus, parents are about half as likely to develop a cold as exposed non-parents. And the bigger a parent's brood, the stronger her resistance, a Psychosomatic Medicine report showed. (Scientists think that social support, not just increased immunity thanks to constant exposure, is behind the effect.) Even if you do succumb, feeling understood and cared for, either by your doctor or by family and friends, can reduce the severity of your symptoms. A study by Barrett and his colleagues found that people who felt that their physicians were more empathetic had slightly shorter, milder colds as well as greater immune responses.