If you’ve never experienced training at altitude, it’s normal to be curious. Does it feel harder? Will you struggle to breathe? Is it only for elite athletes?

At Combine Air, we train in a simulated altitude environment set to 3,500 metres above sea level, and while it might look like any other gym at first, it feels very different once you start moving.

Here’s exactly what to expect.

What Does Training at 3,500m Feel Like?

When you first step into the CA x Arena, everything feels familiar… until the session starts.

At altitude, oxygen levels are reduced, which means your body has to work harder to produce the same output. That’s the entire point.

During conditioning sessions, you may notice your breathing becomes quicker earlier than usual. In strength sessions, rest between sets can feel slightly longer. Lactic acid builds faster too, so the muscle burn shows up sooner.

This doesn’t mean you’re unfit. It means your body is responding to a stronger training stimulus.

And that response is where results come from.

Pro tip: Arrive fuelled and hydrated. A light snack around 60 minutes before training and good hydration can significantly improve how you feel during your first sessions.

How Long Does It Take to Adjust to Altitude Training?

Most people adapt faster than they expect.

While everyone responds differently, the majority of ALL-STARS begin to feel noticeably stronger and more comfortable by week two. Early sessions may feel challenging, but consistency is key.

As your body adapts, it becomes more efficient at using oxygen, allowing you to work harder with less perceived effort.

Pro tip: Training at altitude three or more times per week helps speed up adaptation and unlock performance benefits sooner.

What If I’m Not “Fit Enough” for Altitude Training?

This is one of the most searched and most misunderstood questions about altitude training.

The truth is simple: altitude training is for everyone.

If you can move, you can train at CA.

Every Squad Session is coach-led and fully scalable. Loads, reps, pace, and intensity are all adjusted to meet you where you’re at. You’ll be challenged, but never left behind.

Pro tip: Be open during your Player Profile. The more your coach knows, the better they can guide your progression safely and effectively.

How Hard Should You Push in Your First Sessions?

Your first few altitude sessions are about learning, not maxing out.

Inside the Arena, SweetSpot oxygen readers display live oxygen saturation so you can gauge effort in real time. Combined with coaching cues, this helps you understand when to push and when to pull back.

You’ll quickly develop a feel for what “working hard but sustainable” means at altitude.

Pro tip: Wearables that track heart rate and effort zones can help you train smarter and recover better.

Is Training at Altitude Safe?

Yes. Combine Air uses normobaric hypoxia, meaning air pressure stays the same while oxygen levels are safely reduced. This method has been used in elite sport for decades and is backed by extensive research.

Sessions are time-controlled, coach-supervised, and programmed with progression in mind. You’re never thrown into the deep end.

Will I Feel Dizzy or Lightheaded?

Some people notice mild lightheadedness in their first session, especially if they arrive dehydrated or under-fuelled. This is usually brief and resolves quickly.

Listening to your body, pacing your effort, and fuelling properly minimises this.

Pro tip: Avoid fasted training when new to altitude.

How Is Altitude Created Inside the Arena?

Each CA x Arena is powered by The Chamber, the system that simulates altitude.

Nitrogen is pumped into the Arena, lowering oxygen levels to replicate training at 3,500m above sea level. This hypoxic environment forces your body to adapt by improving cardiovascular efficiency and oxygen utilisation.

The result is a training effect you simply can’t replicate at sea level.

Does Altitude Training Help With Fat Loss and Fitness?

Yes. Training at altitude elevates heart rate faster, increases calorie burn, and often enhances post-exercise afterburn.

When combined with structured programming, this makes altitude training a highly efficient way to improve conditioning, body composition, and overall fitness.