Fitness & Movement
HIIT: What It Is, Its Benefits and How It Differs From Steady Cardio
What high-intensity interval training is, what real benefits it brings, whether it really 'burns more fat', and who should be more careful with it.
3 min read
4 articles
What high-intensity interval training is, what real benefits it brings, whether it really 'burns more fat', and who should be more careful with it.

What zone 2 actually is, how to find it without a lactate test, how much time it deserves, and why the polarized model beats the familiar habit of running everything at a medium pace.

How much strength and cardio work you need per week per WHO guidance, how frequency affects muscle growth, how many sets per muscle group, and how to spot under-recovery.

How to set heart rate training zones without a lab test, why 220 minus age is unreliable, how the Karvonen method works, and what Zone 2 actually builds.