People who don't get enough sleep show higher levels of inflammation, say scientists who study colds. Smoking, chronic stress and lack of exercise can make you more susceptible to the viruses, too. Frederic Cirou/PhotoAlto/Corbis hide caption

itoggle caption Frederic Cirou/PhotoAlto/Corbis

Brenda Hummel and her 7-year-old daughter Andrea in their home near Des Moines, Iowa. Andrea was born with severe epilepsy and gets her health care through Medicaid. Clay Masters/Iowa Public Radio hide caption

itoggle caption Clay Masters/Iowa Public Radio

At a Minecraft camp in Shaker Heights, Ohio, kids trade secrets about making their virtual worlds come to life. Sarah Jane Tribble/WCPN hide caption

itoggle caption Sarah Jane Tribble/WCPN

Can you spot the four laundry pods? CR/John Powers and Ariana Salvato/Apotrophe/Courtesy of Consumer Reports hide caption

itoggle caption CR/John Powers and Ariana Salvato/Apotrophe/Courtesy of Consumer Reports