Experienced instructors lead boot-camp sessions in water, tailoring exercises such as pool sprints & treading water with weights

Personal trainer Raven Aultman leads groups through five weeks of intense cardio & resistance training combined with three-day diet plan

Groups run, jump, and race up and down bleachers to hit target heart rates and tone physiques during 30- to 40-minute boot-camp sessions

Physician & certified group trainer whip clients into shape with intense personal or bootcamp sessions, detox diet & meal plans

Chris Green & staff of certified trainers lead students through high-intensity workouts to torch fat, tone muscle & boost confidence

Skilled coaches lead varying levels of workouts designed to burn 500–1,000 calories & focused on cardio, flexibility & core strength

Motivational instructors lead 45-minute sessions of various exercises in indoor facilities with suspension machines and soft foam floors.

Supportive all-female groups meet up at Central Park for 60-minute sessions that turn jogging trails and park benches into gym equipment.

VaMeka Nelson leads high-intensity routines blending cardio, resistance-training, core-training, and flexibility exercises to tone bodies.

Six-week program aims to battle holiday bulge & pairs intense Tabata training with healthy diet plan for seasonally stoked metabolism