HIIT vs. Steady-State: Which Burns More Fat?

The HIIT vs. steady-state debate has been raging for decades. Personal trainers on social media will tell you one is dramatically superior. The research tells a more nuanced story.
HIIT — high-intensity interval training — burns fewer calories during the session itself compared to an equal duration of steady-state cardio. However, HIIT creates a greater 'afterburn effect' (EPOC), meaning your metabolism stays elevated for hours afterwards.
Steady-state cardio (jogging, cycling at moderate pace) burns more total calories per hour and is easier to recover from. It's also gentler on joints and can be done daily without accumulating excessive fatigue.
For pure fat loss, total calorie expenditure matters most. If you enjoy HIIT and can recover from it, do HIIT. If you prefer longer, easier sessions, steady-state is equally effective when matched for total energy expenditure.
The optimal approach? Both. At FORGE, we programme 2-3 HIIT sessions per week alongside daily movement (walking, cycling, active recovery). This combination maximises fat oxidation, preserves muscle mass, and keeps training enjoyable.
The worst cardio is the one you skip. Find what you enjoy, be consistent, and pair it with resistance training and sensible nutrition. That's the unsexy truth behind every successful body composition change.
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