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The 21 Day Fix Cardio Fix Exercises is a workout program designed to help you burn fat, improve cardiovascular health, and boost overall fitness. The cardio routine, led by trainer Autumn Calabrese, features a mix of high-intensity exercises that target multiple muscle groups. It focuses on exercises like jumping jacks, high knees, mountain climbers, and squat jumps, which elevate your heart rate and burn calories. The workouts are designed to be effective yet accessible, making it ideal for both beginners and seasoned fitness enthusiasts. With its quick, 30-minute sessions, Cardio Fix helps you get fit in just three weeks while improving endurance and strength.