Can’t sleep? Welcome to the club you never wanted to join. More than half of people with rheumatoid arthritis have trouble getting shut-eye—that’s as much as three times the rate of everyone else. “Sleep problems are ubiquitous in the RA population,” says Robert Hylland, M.D., a rheumatologist in Michigan. Given how uncomfortable the disease, that's hardly a surprise. Find out just how detrimental poor sleep can be for RA, and most important, how you can get the zzz’s you need.