Exercise keeps the body in peak condition, which explains the marbleized ThighMaster lying next to Michelangelo’s David. Enjoy an anatomical renaissance with today’s Groupon to Mariner Square Athletic Club in Alameda. Choose between the following options:

• For $29, you get 10 all-day access passes (a $200 value).
• For $45, you get 20 all-day access passes (a $400 value).
  
  

Mariner Square Athletic Club’s cheery color scheme and 50,000+ square feet of floor space lend an airy, upbeat vibe to every fitness session. Geared-up guests can traverse the short-circuit resistance-training room’s line of machines or take to the floor to hoist free weights and crank cardio machines using upper-body, lower-body, or vestigial-tail muscles. Floor-to-ceiling windows brighten the six-lane indoor pool, heated to comfort swimmers and deter ice monsters from skinny-dipping. The gym’s amenities also include racquetball, a sauna and whirlpool, locker rooms, free parking, and childcare services (extra fee, not included in the value of this Groupon).

Mariner Square Athletic Club’s expansive confines also house a quartet of studios that host more than 85 group exercise classes each week. Interval-training classes pique stamina and stoke fat-burning flames with a quickly rotating roulette of moves, and power-spin classes inspire fast pedaling with bumping tunes. After rigorous cardio sessions, exercisers can wind down in the flow-style Revitalizing Yoga or in Gentle Aqua, which gently works out achy, injured, and pregnant participants. Mariner Square’s instructors also teach Zumba, karate, core-centric Absolution, and tai chi classes, with springboard and reformer Pilates and CrossFit sessions available for an additional fee.