Is treadmill cardio a waste of time for fat loss?
The verdict
No. The influencers calling cardio trash are wrong. It burns real calories and it counts.
Steady cardio burns real calories and supports the deficit. It is a tool, not a punishment. Strong evidence.
Fitness culture swings between worshiping cardio and calling it the worst thing you can do. The evidence sits calmly in the middle: steady cardio burns meaningful calories, strengthens your heart, and supports the deficit that drives fat loss. It is less muscle-protective than lifting and less time-efficient than intervals, and it still plainly works.
The best cardio is the one you will repeat. For most people that is walking. If you like the treadmill, the treadmill likes you back.
Do this instead
- Treat cardio as a supplement to lifting, not a replacement for it.
- Pick the version you don't dread. Sustainable beats optimal.
- You cannot outrun a bad diet. Cardio supports the deficit, food creates it.
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GradeMyHabits grades everyday habits against published research. It is not medical advice. Talk to your doctor before changing medication, fasting beyond a day, or starting an intense program with a health condition.