There Will Be Spandex

David Barton Gym opened its first Bay State location in the Park Plaza Hotel this April. (Photograph by Toan Trinh)

BFX Studio

Town Sports International—the owner and operator of Boston Sports Clubs—downsizes its concept at BFX, a boutique studio with digital perks (electronic check-in, free WiFi) and a wide range of classes.

Size: 10,000 square feet.

Locker-Room Amenities: Intelligent Nutrients, a certified organic line.

Who’s There: Back Bay residents; savvy tech nerds; the contract-averse.

Coolest Perk: The “fusion room” is split into half stadium-style spin studio and half high-intensity training room for the ultimate combo class.

Price: $25–$30 per class; unlimited class option also available.

Location: 699 Boylston St., Boston, bfxstudio.com.

Republic Fitness

The women-only Healthworks chain goes coed with ­Republic Fitness, a Financial District gym offering group classes—boxing, Tabata, and ­weightlifting.

Size: 15,000 square feet.

Locker-Room Amenities: Luxe products from Malin + Goetz.

Who’s There: Office workers; suburban commuters; new condo residents.

Coolest Perk: Miss your favorite class? Members can use the group fitness studio at their convenience (when it’s empty, of course) and participate in a slew of prerecorded classes on a large screen.

Price: Starts at $115 a month.

Location: 2 International Place, Boston, 617-379-5800, republicbos.com.

David Barton Gym

David Barton’s “nightclub meets gym” theme captivated flashy fitness buffs in the early ’90s. Decades later, the company has launched its first Massachusetts location in the Park Plaza Hotel, with a new vibe (less Studio 54, more trendy lounge) but the same “sex sells” concept.

Size: About 18,000 square feet.

Locker-Room Amenities: The company’s own brand, called “Look Better Naked.”

Who’s There: Young professionals; hotel guests; people who frequent nightclubs.

Coolest Perk: A Cyc Fitness indoor cycling studio is housed right inside the gym.

Price: Starts at $112 a month.

Location: 50 Park Plaza, Boston, 617-830-6745, davidbartongym.com.