Michael Mack on Instagram: "DIFFERENT TYPES OF CARDIO: ALL BENEFICIAL. HIIT (High Intensity Interval Training) involves short bursts of high-intensity exercise followed by rest, while cardio is a broader term for any activity that raises your heart rate and can be performed at a steady, moderate intensity. HIIT is more time-efficient and can lead to greater cardiorespiratory fitness improvements. Some contend that HIIT offers a higher “afterburn” effect to burn fat, while steady-state cardio is