The ultimate HIIT workouts for fat loss. Afterburn group training sessions in GOLD'S STUDIO are trainer-led workouts that change every week.Led by a certified coach, you'll kick up your metabolism and not only burn up to 700 calories an hour, but continue to burn fat for up to 48 hours after your workout is complete. Your Afterburn workout changes every week to prevent your body from hitting those pesky plateaus. During each session, you'll combine spurts of high energy cardio with strength training, allowing your heart rate to stay elevated throughout. The end result is rapid fat burning, toning, stronger functional movement, and improved cardiovascular endurance.