Stop Using Training as a Fat Loss Tool

I want to talk about something I think most people get wrong: using exercise as a fat loss tool.

Here's what I mean. When you train — whether it's a strength session, a conditioning session, or a hybrid of both — that session should have one job. If you're in a strength session, the job is to get stronger. If you're in a conditioning session, the job is to improve your fitness. That's it. That's what the session is for.

The problem is, most people walk into training thinking about the scale, not the session. And that changes how they fuel themselves — usually for the worse.

Under-fuelling ruins the point of training

If you go into a strength session under-fuelled, you're not going to get the full benefit of it. You might get away with this as a complete beginner — your body responds to almost anything in the first year or so of training. But if you're intermediate or advanced, training under-fuelled means you're leaving progress on the table. Same goes for conditioning. Go in under-fuelled and under-recovered, and your output drops. You're just not getting what you could be getting from that session.

This isn't just gym folklore — it's backed by research. Studies on athletes training in an energy deficit consistently show it suppresses the hormonal and muscle-building response to training. Beginners can often still make progress because their bodies respond to almost any stimulus early on. But the more experienced you get, the more that under-fuelling costs you.

Muscle helps — but don't expect miracles

Building strength and muscle also plays a role in fat loss, because muscle burns more calories at rest than fat does. So the more muscle you carry, the more you're burning just existing — walking around, doing the school run, whatever. It's a real effect. It's just not a dramatic one. A few extra kilos of muscle might add somewhere in the region of 30-40 calories a day to what you burn at rest. Worth having. Not a shortcut.

The bit that actually moves the needle: NEAT

Here's where I think most people go wrong with fat loss. Fat loss comes from a calorie deficit — yes — but a huge part of that deficit comes from something most people never think about: NEAT. Non-exercise activity thermogenesis. Basically, everything you do that isn't a structured workout. Walking, taking the stairs, cleaning the house, playing with your kids, standing instead of sitting.

Your formal training session isn't what drives this. Your daily movement is. And the research backs this up — NEAT is one of the most variable parts of your daily calorie burn, and can swing by hundreds of calories between two people who look similar on paper. There's even research suggesting that doing more structured exercise doesn't always add extra calories burned overall, because people tend to move less for the rest of the day to compensate.

So here's the practical bit: if your steps are high and your calorie deficit is only small, you'll still make progress. If your calories are very low but your steps are also low, progress will be slow, even though you're "trying harder" on paper. Push your steps up, and you effectively deepen your deficit without touching your food.

So what's the point I'm making?

Stop treating exercise like a fat loss tool. Go into every session with a purpose — get stronger, get fitter, get healthier — and fuel yourself to actually achieve that purpose. What drives fat loss is what you eat and how you live the other 23 hours of your day. Let training do its actual job, and let food and lifestyle do theirs.