Fitcorp Financial District, Boston

Fitcorp's trainers have big shoes to fill. Founder Gary Klencheski earned his exercise technician certification from the American College of Sports Medicine and served on the Governor's Committee on Physical Fitness and Sports for 20 years. Klencheski's passion and expertise trickle down through each of his gyms' eight facilities, where each personal trainer has a degree in exercise science, a nationally accredited certification, and the charisma of a dictator holding pompoms.

The gym's array of fitness services includes cardio and strength-training equipment, as well as group Pilates, yoga, boot-camp, and Zumba classes. Massage and acupuncture sessions keep the body in high gear, and an onsite nutritionist offers nutrition tips developed by registered dietitian Amy Boyce.