Though our ancestors had to construct pyramids or haul enormous rocks across England to stay in shape, modern fitness clubs allow us to work out by building them from the ground up. Stack a brick house with today’s Groupon to Eastside Tennis and Fitness Club. Choose from the following options:

• For $10, you get 10 drop-in fitness classes (an $80 value).
• For $20, you get two hours of court time for tennis (up to a $62 value). Court reservations are first-come, first-served and can be made up to a week in advance.
• For $25, you get a three-month unlimited gym membership (a $75 value, with the one-time fitness enrollment fee of $75 waived).<p>

A veritable metropolis of sports and fitness amenities, Eastside Tennis and Fitness Club opens its doors to workers-out of all stripes with a host of group fitness classes and a tennis court that urges players to come hither. An extensive program of exercise classes combats muscular apathy with one-hour workouts that can be adapted to all fitness levels. Lissome gurus guide minds and bodies down the path of cosmic clarity in yoga classes that emphasize strength and flexibility, and students embark on a stationary odyssey to fields of well-defined calves in spinning cycling classes. Those who prefer to tone their bodies in frantic ball-whacking battles can take to the tennis court for two hours of singles or doubles play. Players are asked to remember proper etiquette at all times, which means peacefully relinquishing their courts when the next players arrive and not using their rackets to grate cheese for between-game snacks.

Gym members can also enjoy 90-day jaunts across the fitness center, which houses a cardio-buttressing cadre of elliptical cross-trainers, iron-cast free weights, rowing machines, and upright bicycles. A cardio theater distracts minds from grueling workouts and serves as an invaluable resource for the gym’s certified personal trainers, whose motivational vocabulary draws heavily on Laurence Olivier’s speech as Henry V.