Watch The FIRM: Time Crunch Cardio - Fat-Blasting Bursts (1970) : Full Movie Online Free Three 20-minute workouts include The Firm's 8 Second Secret - short bursts of high intensity intervals that speed up weight loss and cut workout times in half! Included are Cardio + Sculpt Combo, Fat-Blasting Bursts, and Calorie Burning Cardio, plus bonus