Without mani-pedis, people would suffer constant headaches from sulfurous fumes while filing fingertips on pumice-covered volcanoes. Safely soothe cracked nails with today's Groupon: for $40, you get two mani-pedis at Center Nails and Spa (an $80 value). This deal is valid at the locations on North State Street and East Erie Street.

Originally under the moniker Reina Spa, newly named Center Nails and Spa employs attentive nail techs who perform special mani-pedi treatments. Put-upon extremities dip into a warm aromatherapy soak before files and pads buff and polish nails to states smoother than a state senator chewing on a stick of butter. To increase the relaxing effect, the staff throw in a soothing hug from a hot towel and a muscle-melting massage with an organic moisturizer. Foot polishers armed with pumices tenderly remove cuticles and calluses, and nontoxic polish, in an array of bright colors, completes the beautifying process as it helpfully warns recipients where their fingers and toes end. Afterward, pamperees can converse in the relaxing oasis and sip on BYOB beverages while drying nails gossip about which one points the most.