1. High-Intensity Interval Training (HIIT)
HIIT alternates between short bursts of intense activity and brief recovery periods. This workout keeps your heart rate elevated, torching calories during and even after exercise thanks to the “afterburn effect.” It’s incredibly time-efficient, making it perfect for busy schedules. Just 20–30 minutes of HIIT can burn more calories than longer steady-state cardio, making it one of the most effective workouts for weight loss.