SIOUX FALLS, S.D. (KELO) -- A Sioux Falls gym is promoting fitness while also bringing awareness to a disease that affects over seven million people across the country. It was cooler than your typical August morning at Lake Lorraine, but the shoes still hit the walking path to raise money for the South Dakota Alzheimer's Association. "I think the overall goal is just to bring more attention to Alzheimer's and dementia as a whole. It's a really h…