Should I be wearing more layers?

We’ve all seen these gym-goers — the one in the hoodie, hood up, smashing weights; the other on the stair climber, sweating it out in specialist gear that looks strangely like a bin bag.  

And let’s be honest — most of us have probably tried it ourselves, wearing an extra layer in the hope it burns extra calories. The logic seems simple: more layers = more sweat = more calories burned, right? 

But does piling on the clothes really give you a better workout? Or is it just another fitness fad with more myth than muscle? 

Let’s break it down. 

The science behind layering up 

Wearing extra layers during exercise increases your core body temperature, which can help raise your heart rate more quickly. That might sound like a good thing — and to some extent, it is. This is part of a process called thermogenesis, where your body produces more heat and energy. 

This is why layering up is often used during warm-ups, exercises or cold outdoor conditions, to prep the body and reduce injury risk. But in a climate-controlled gym — and for the entire duration of a workout — are those extra layers really necessary? 

Well, it depends on what you’re doing and why. If you’re warming up or doing slower, more static movements, layering can be helpful. Or maybe you just want to stay cosy, show off that new co-ord, or feel a bit more covered — totally valid reasons. 

But if you’re already deep into a high-intensity, sweat-drenched session — where you feel hotter than Hades — that’s when I’d recommend using both common sense and caution. 

More sweat doesn’t mean more fat burned. It just means you’re losing water — weight that comes back as soon as you rehydrate. Sweat is your body’s cooling system, not a fat-burning measure. Daily weight fluctuations are often due to water retention, glycogen, digestion, or muscle recovery — not just fat loss. 

Yes, sweating more might feel like you’re working harder, but the actual difference in calories burned is minimal — and it can come at the cost of comfort, performance, or even safety. 

Using layers: elite athletes vs everyday gymgoers 

Let’s talk about Rocky. Yes — that Rocky. Sylvester Stallone’s iconic training montages probably inspired an entire generation to throw on a grey hoodie and sprint upstairs. Jokes aside, we’re now seeing the rise of layering in gyms as a direct reflection of the extreme methods we associate with elite athletes. 

Gone are the days we simply admired professional athletes — now we want to train like them. It’s no longer just about fitness; it’s about performance, intensity, and pushing limits. People are mimicking what they see athletes do — whether it’s layering up to channel that “grind mode”, training harder, sweating more, or replicating the aesthetics of hard work. 

In professional sports like boxing, MMA, and wrestling, athletes often use extreme layering or sauna suits during fight camps to “cut weight” before a weigh-in. MMA’s most famous star, Conor McGregor, is notorious for his brutal cuts — openly admitting that dropping to 145 lbs pushed his body to the brink, describing near-blackouts and severe physical stress. 

These are short-term — and sometimes dangerous — tactics designed to shed a few kilos of water weight within hours, not to burn fat or improve long-term body composition. 

The moment they rehydrate or eat post-weigh-in, that weight comes straight back. It’s a temporary measure, not a sustainable method — and definitely not something most people should be copying in their everyday gym routines, especially without professional supervision. 

Do layers burn more calories? 

In theory, yes — slightly. The increased heat production and cardiovascular strain can raise your total calorie burn by a small margin. But before you throw on three hoodies and start doing burpees, here’s the catch: 

The downsides of wearing layers during workouts: 

• Can lead to early fatigue and dehydration 

• May overheat your body, especially in high-intensity training 

• Can reduce performance quality 

• Increased risk of light-headedness, nausea, or even heat exhaustion 

In other words, the marginal gain in calories burnt might be cancelled out by a drop in workout intensity or duration. You might sweat more — but you’re not necessarily getting fitter or leaner any faster. 

Everyone sweats differently — men often sweat more, but many factors like fitness, genetics, hormones, and environment play a role. Listening to your body is key to avoid overheating or discomfort. 

The verdict: should you layer up to burn more calories? 

By all means, wear layers to the gym. There are plenty of valid reasons — from religious or cultural considerations to feeling stylish, or even the delayed gratification of revealing your gains later on. 

But if you’re doing it purely to feel the burn, layering might give you a short-term sweat boost — just don’t expect it to significantly speed up fat loss. The difference is minimal, and the risks — like overheating or reduced workout quality — are real. 

So, what should you focus on instead? 

• Consistent strength and cardio training 

• More daily movement outside the gym (think steps, walks, active breaks) 

• Balanced nutrition tailored to your goals 

• Quality sleep and proper hydration 

• Tracking progress with intention — not obsession 

Final thoughts 

Fitness isn’t just about being sweaty — it’s about working smarter and building habits that last. If you’re still tempted to wear layers, go for it — just do so safely. Especially in warm indoor environments, stay hydrated, listen to your body, and remove layers when needed. 

And if you’re unsure what’s helping versus what’s hype, speak to one of our qualified professionals. They’ll help tailor a plan that fits your body, your lifestyle, and your goals — no bin bags required.