Former Charlie's Angel Cheryl Ladd, 57, says, "Just like our bodies, our minds and memories can slow down as we age. Mind games are a fun way to keep your brain active and agile. And it might sound clichéd, but try to live a happy life. I stay very involved with my loved ones, including my husband of 27 years, our children, and grandchildren. I also make sure to leave plenty of time for golf, one of my biggest passions, which helps keep me physically and mentally fit."