Laid-back gym staffed by certified trainers & stocked with cardio machines & weights, plus functional training equipment

Instructors with backgrounds in dance, weightlifting & boxing lead 4–7 students through 45-minute workouts focused on functional movements

Four indoor tennis courts facilitate recreational competition with year-round availability & flexible hours

Four Boston–area locations surround patrons with training equipment, personal trainers, group classes, saunas & indoor pools

Impressive array of 30- to 60-minute group sessions range from Pilates & yoga to Power Vibe, which uses vibrating Power Plate machine

Strength training with bursts of cardio tones & conditions bodies during workout originally designed for police officers & martial artists

Instructors lead spinning, yoga, or Zumba classes or guide boot-camp sessions through weight-training & core-strengthening exercises

Music sets rhythm of women-only classes that burn calories and sculpt legs on stationary bikes or through suspension exercises

High-intensity CrossFit workouts change daily as trainers strike balance between strength and cardio to bolster athleticism

Certified trainer & black-belt martial artist teaches punches, kicks & self-defense strategies during 60-minute classes for all skill levels