Most people think HIIT is just for cardio—but the benefits go way beyond your heart. Studies show that just two sessions a week can significantly boost VO₂ max, especially if you’re new to training. But here’s what’s less commonly known: HIIT also improves mitochondrial health, reduces visceral fat (the dangerous fat around your organs), and may even increase muscle size and quality—even without lifting weights. That’s a big deal. Visceral fat is a major risk factor for metabolic disease, and im