The Duncaster Retirement Community is now offering memberships to its aquatic and fitness center to non-residents. including cardio and weight machines. Members may also bring two guests during fam. with body weights and dumbbells in rotation. The workout combines those tools with conditioning, and of course, boxing. There are floor stations for strength training. But the pièce de résistance is R. Their Silver&Fit membership includes all of the standard amenities…