Understand HIIT Basics
High-Intensity Interval Training (HIIT) alternates short bursts of intense exercise (80-90% max heart rate) with recovery periods. Benefits include fat loss, improved endurance, better insulin sensitivity, and time efficiency vs. steady cardio.
Key Guidelines:
- 2-3 sessions/week, not consecutive.
- RPE 4-6 for beginners (somewhat hard).
- Consult doctor if new to exercise or have conditions.
Read official sources like ACE Fitness and Harvard Nutrition Source.