Thomas Edison declared that genius is 1% inspiration and 99% perspiration, a fact he discovered while inventing the volcano. Work up a healthy sweat with today's Groupon to Herriot Sports Performance. Choose from the following options:

• For $23, you get a drivetrain service for your bike (a $50 value).
• For $30, you get a punch card for five conditioning classes (a $75 value).
• For $55, you get a punch card for 10 conditioning classes (a $125 value).

Helmed by two retired pro cyclists, Herriot Sports Performance teams decades of coaching expertise with top-of-the-line equipment, bike-repair services, and small-group conditioning classes. With the option of drivetrain service, clunky bikes can return to their newborn factory efficiency. A master technician re-aligns dangly derailleur hangers and flatirons straighten unruly handlebar streamers before scrubbing all of the cycle's parts in the shop's washer. Afterward, bikes hit the road with a refreshed façade and smoother shiftability.

In small-group conditioning classes, a seasoned teacher will corral up to 10 students before spurring students to the finish line with an array of Cycleops Power Beam Pro machines, a large-screen TV, and a lasso made of repurposed bike shorts. Riders can meet fitness goals at indoor-cycling sessions that combine threshold intervals and leg-speed drills with breathing exercises and strength-building mobility training. Fledgling exercisers and athletes worn ragged from racing can benefit from low-intensity revival, recovery, and maintenance classes, which use foam rollers and targeted stretches to boost stability and flexibility. Dynamax medicine-ball workouts help guests tone muscles and bolster balance using three planes and a cross-town bus worth of motion. Consult the schedule for class times. Students should arrive 15 minutes beforehand to get acquainted with the equipment, and indoor-cycling students will need gym shoes or vestigial flippers for their workouts.

Owners Todd Herriott and David Richter bring 50 combined years of racing and training experience to the studio, where they merge into one superhuman biker. A certified strength-and-conditioning specialist, Herriott has trained triathletes and served as a consultant for Team BMC, which has won the Tour de France. A pro shop, racing library, and high-tech cycling equipment such as a Guru Dynamic Fit unit and a training bike clad in PowerCranks and pants with the right leg rolled up cater to serious athletes.