Thunder Gym

Thunder Gym is an old-school gym on West Flagler Street in Miami, built around heavy iron, selectorized machines and turf-based conditioning. Its dumbbells run from 0 to 120 pounds, and the space includes a turf zone with ropes, stretch area and kettlebells, plus cardio equipment such as treadmills, ellipticals, stair climbers and spin bikes.

Membership has no contracts, and personal training is available as one-on-one coaching for people trying to break a plateau or sharpen their form. The gym also takes part in the SilverSneakers and Optum senior programs, with no-cost access for eligible seniors. The gym is open daily, with early morning hours on weekdays and shorter weekend hours.