For more than 35 years, the Powerhouse brand has fostered an enthusiasm for fitness with an expanding host of franchised gyms numbering more than 300 worldwide. The 30,000-square-foot South Hackensack Powerhouse Gym invites all level of worker-outers into its fitness fold, adjusting its training and programs for those in pursuit of a weightlifting title as well as those with basic health goals who have never set bionic foot inside a gym before. Personal and group trainers tailor routines around client objectives, and TRX, Zumba, Pilates, and kettlebell classes steer physiques through specialized workouts. A full line of free weights and machines complement extra amenities, including a juice bar and towel service, and a women-only exercise area allows ladies to work out in peace without having to build a fortified anti-cootie tree house. After sweat-fueled sessions, guests can soothe tender spines at the massage and chiropractic-therapy center.