The top three most efficient modes of human-powered transportation are (in no particular order): Flintstone cars, bicycles, and a palanquin carried by the various monarchs you've conquered and overthrown. Make sure the most feasible of these is in perfect working order with today's Groupon for bike services at Spokes, which has locations in Wheaton and Naperville. Choose between the following options:

• For $35, you get a standard bike tune-up (a $70 value).
• For $69, you get a bike fitting (a $150 value).

Spokes is a massive two-wheeler retailer and service and repair shop. The repair people are experts in many makes and models, including Campagnolo, Shimano, Sram, Mavic, and bikes whittled out of a block of cement, and they crank out quality work in days, instead of weeks, months, or the amount of time spent working on Avatar. The standard tune-up is a full bucket of tweaks and twimbles, including a general cleaning; a check of parts for wear; brake, bearing, and gear adjustment; and more. The bike fitting consists of a cleat adjustment; seat and handlebar adjustment; fitting for hip, knee, and foot alignment; and a limp handshake.

Reviews

Four Yelpers give Spokes’ Naperville location a 4.5-star average, and two Yelpers give the Wheaton location a 4.5-star average:

• Knowledgeable associates. Good Inventory of bikes. – Bob F., Naperville location
• I spent some time browsing through the bike accessories and before I knew it, fixed tire and fixed kickstand. The bill was just over $15. Good, friendly and really quick. – Jo Jo F., Naperville location