Sparthos High Altitude Mask (16 Breathing Levels) for Gym, Cardio, Running, Endurance & HIIT

What this is (and what it’s trying to do)

The Sparthos High Altitude Mask is a training mask built to make workouts feel harder by simulating high-altitude style breathing. The idea is straightforward: you end up taking more complete, deeper breaths, which can help strengthen your breathing muscles over time—especially your diaphragm and the respiratory system.

On paper, it’s aimed at people who want their cardio, running, HIIT, or endurance sessions to feel more demanding without needing special locations or gear. It’s also marketed as something that lets you keep training without constantly removing the mask, which matters if you’re the type who hates “setup breaks” during workouts.

Key takeaways on the experience

What you’ll notice first is that the mask changes your breathing pattern while you exercise. That’s the whole point: it can push you to stay deliberate with inhalation and control your rhythm as intensity rises.

The product description also points to potential knock-on benefits—less fatigue during sessions, more “energy after” the workout, and a more conditioned feeling. Those outcomes may vary a lot from person to person, but the mechanism (altering how you breathe) is the same regardless of your starting fitness level.

And yes, it comes with 16 breathing levels. That’s useful if you’re not sure where to start or if you want to progress over time rather than using one fixed resistance.

Where it shines (best use cases)

This mask makes the most sense for workouts where controlled breathing and steady effort are part of the training—things like:

• Cardio sessions where you can maintain form
• Running or endurance training where you want consistent breathing practice
• Gym cardio circuits and conditioning work
• HIIT intervals, if you can handle the challenge without losing control

A practical example: imagine you’re doing a treadmill run or bike intervals. With a higher breathing level, you’re forced to take deeper breaths and manage your pace. You may find you can’t sprint at the same speed immediately—but you can keep the session going with better breath discipline.

What to watch out for before buying

This is one of those products that can be great—or frustrating—depending on your tolerance. A mask that simulates altitude can feel uncomfortable or harder than you expect, especially at higher levels. If you’re sensitive to breathing resistance, it may feel like it “cuts your workout” rather than improving it.

Also, the claim that it can cut training time “in half” is pretty bold. Even if the mask makes you work harder, training outcomes depend heavily on your overall routine, recovery, and intensity management. So treat it as an add-on that changes one variable (breathing demand), not as a guarantee that your schedule will shrink.

Tech specs (only what’s stated)

What you get in terms of controls and progression

The biggest operational feature is the 16 breathing levels. That gives you room to start lighter and ramp up as you adapt. For many buyers, that progression is more important than flashy promises—because it’s how you avoid going too hard too soon.

If you prioritize consistency, start at a level that lets you keep breathing under control while still feeling challenged. If you jump straight to the highest settings, you may get short-term struggle without the clean, repeatable training effect you’re actually looking for.

Who it’s for (and who should skip it)

It’s a solid pick if you want an at-home way to make cardio and endurance training feel more intense, and you’re willing to practice breathing while you train—whether that’s in the gym, on a run, or during HIIT.

It may not be the best match if you struggle with breathing comfort, you’re expecting a fully “set it and forget it” device, or you only train by going as fast as possible regardless of technique. The mask changes how you move through the workout, so if your plan depends on unconstrained breathing and airflow, you may find it limiting.

Is it worth it?

Worth buying if you want a simple, adjustable training mask to simulate high-altitude style effort and you’ll use the 16 breathing levels to progress gradually. It’s best when your workouts already value controlled breathing and you can stay consistent session after session.

Consider skipping it if you’re looking for guaranteed performance changes, you’re uncomfortable with any breathing resistance, or you tend to train in a way where form and breathing control are secondary. This one sits more in the “training tool to add challenge” category than a miracle shortcut.

Mini FAQ

How many breathing levels does it have?

It’s described as having 16 breathing levels, from beginner to more advanced/pro levels.

Do you have to remove the mask during workouts?

The description suggests you don’t need to take it off to change intensity, since you can adjust the airflow level.

What workouts is it designed for?

It’s marketed for gym training, cardio, fitness, running, endurance training, and HIIT.

Does it strengthen the diaphragm?

The description says it forces deeper, more complete breaths intended to strengthen the diaphragm and respiratory system—results can vary by person and how you train with it.

Final thought on deciding

If you’re comparing this to simpler cardio (no mask) and more advanced training options, this is basically a controlled way to make breathing harder anywhere. If that sounds like a benefit you’ll actually use, it’s worth a look—just start carefully on the lower levels so the mask supports your training instead of derailing it.