1. Getting a Mammogram
    In 2009 the U.S. Preventive Services Task Force recommended that mammograms for women with an average risk for breast cancer start at age 50 instead of 40—causing many 39-year-olds to heave a sigh of relief. However, the medical community overwhelmingly disagreed with this finding so the rule is still that yearly mammograms should begin at the age of 40 for most women.