Sidebar
Weight Loss and Body Composition

Weight Loss and Body Composition

  • Sleep Cloud Altitude SystemSleep Cloud Altitude System
    Choose Options

    Sleep Cloud Altitude System

    Sleep Cloud has redefined the sleeping at altitude space, quiet, attractive and efficient. Sleeping at altitude allows the body to produce a higher red blood cell count, thus boosting oxygen enriched blood, which leads to increased physical performance. Evidence suggests that the Live High...
    From $7,390.00 AUD
    From $7,390.00 AUD
    Choose Options
  • Training Cloud Altitude SystemTraining Cloud Altitude System
    Choose Options

    Training Cloud Altitude System

    Indoor training activities are often used by those with limited training time available, so to maximise the effectiveness of your indoor workout, add the Box Altitude Training Cloud system to you indoor training setup. Box Altitude designed the Training Cloud system to enhance your...
    From $6,320.00 AUD
    From $6,320.00 AUD
    Choose Options
  • Altitude Bedroom SystemAltitude Bedroom System

    Altitude Bedroom System

    Simply close your door, turn on your system via the Box Altitude App®, and let the system take care of the rest. Box Altitude specialises in retro-fitting bedrooms, offices or gyms with customised altitude systems. From a lifestyle point of view it is the...
    $14,900.00 AUD
    $14,900.00 AUD
Train at altitude, and the metabolic cost of the same session rises. Sleep at altitude, and your body adapts in ways that influence how it uses energy at rest. The protocol used by 2024 Tour de France Femmes Champion Kasia Niewiadoma-Phinney, Cameron Wurf of INEOS Grenadiers, and the Queensland Academy of Sport. Built into your daily training. Note that altitude training supports body composition outcomes alongside structured training and nutrition. It is not a medical intervention or a substitute for clinical advice on weight management

What Altitude Training Actually Does to Body Composition

The mechanism is metabolic, not mystical.

When you train or sleep in a hypoxic environment, your body responds to reduced oxygen availability with three measurable changes. EPO production rises, increasing red blood cell synthesis. Growth hormone concentrations climb above sea-level baselines during exposure. The metabolic cost of the same workload increases because the body has to work harder to extract and use available oxygen.

Each of these responses has a body composition outcome. Higher metabolic cost of training means more calories expended for equivalent work. Elevated growth hormone concentrations support fat metabolism and lean tissue retention. Improved oxygen utilisation over a multi-week block raises the ceiling on training volume, which expands the total energy expenditure your training year can produce.

Altitude does not replace diet and training. It changes the metabolic context in which your diet and training operate.

What the Science Shows

Three peer-reviewed findings underpin altitude training for body composition.

Up to 20%
Greater calorie expenditure during altitude training vs the same session at sea level
10–20%
Typical range during structured sessions at 2,500m (8,202ft)
2–4 weeks
Altitude block length that produces measurable change
  • Up to 20% greater calorie expenditure during altitude training. Studies show that training in a hypoxic environment can increase calorie expenditure by up to 20% compared with the same session at sea level. The figure is the upper end of the range. Real-world numbers vary by altitude, intensity, and individual response.
  • Higher growth hormone concentrations in altitude-trained groups. Scientific studies have shown significantly higher growth hormone concentrations in athletes training at altitude compared with sea-level counterparts across a defined training period. Growth hormone supports fat metabolism and lean tissue.
  • Greater body fat reduction from HIIT in hypoxic environments. Studies on high-intensity interval training in a hypoxic environment have shown a stronger body fat reduction over a four-week training block than equivalent sea-level HIIT.

These findings are consistent across the literature. They also assume the athletes in the studies were training consistently. Altitude exposure without training does not reproduce these outcomes.

For the underlying methodology, read the how-to guide of sleeping at altitude.

Why Altitude Burns More Calories

The reason altitude exposure increases calorie expenditure is energy economics.

At sea level, your body extracts oxygen efficiently. Your cardiovascular and respiratory systems work at a known cost for a given workload. Move that same workload to a hypoxic environment, and the cost of breathing increases. Your heart rate is higher for the same wattage. Ventilation is higher. Recruited muscle has to work with less available oxygen, raising the metabolic cost of force production. Excess post-exercise oxygen consumption (EPOC) is elevated for hours after the session ends.

Burn calories at altitude during training, and the increase is mostly from the cost of the work itself. Sleep at altitude, and the increase is mostly from elevated overnight metabolic demand and the adaptive cost of increasing red blood cell production.

Both effects are real. Both are modest in absolute terms compared to the difference between training and not training. The protocol works as a multiplier on existing effort, not as a substitute for it.

Who This Protocol Works Best For

Altitude training for body composition produces the strongest results in three groups.

  • Endurance athletes managing power-to-weight. Cyclists, runners, triathletes, and rowers where every kilogram of body fat directly affects race performance. Power-to-weight is the metric. Altitude is one of the few protocols that improves both numerator (power) and denominator (weight) in the same training block.
  • Masters athletes (40+) managing body composition with age. Recovery capacity and metabolic flexibility decline together. Altitude addresses both. Masters athletes running consistent altitude exposure tend to maintain training-tolerant body composition for longer than peers who do not.
  • Performance-focused individuals. People who train seriously, eat seriously, and want a metabolic adaptation stimulus that compounds across years rather than weeks. The Eight Sleep buyer profile, framed honestly: this is not a wellness intervention, it is a measurable physiological tool used the same way elite athletes use it.

If you do not train consistently, altitude exposure alone will not produce meaningful body composition change. The protocol is a multiplier, and the multiplier needs effort to multiply.

What Altitude Training Will Not Do

Three honest boundaries.

  • It will not produce weight loss without diet and training. No serious altitude protocol claims this. Athletes using altitude blocks for body composition combine the exposure with structured training and disciplined nutrition.
  • It will not produce dramatic short-term results. Body composition changes from altitude accumulate across a multi-week block. The metabolic adaptations are real but modest compared to a properly structured training and nutrition program.
  • It will not work as a one-off intervention. Altitude blocks of 2 to 4 weeks produce measurable change. Single nights or sporadic exposure do not.

The honest framing is what makes the protocol credible to athletes who already know how their bodies respond to interventions. Box Altitude builds for that audience.

Match Your Goal to the Right Altitude System

Three Box Altitude systems serve three different body composition use cases.

If you want to train at altitude (recommended for body composition focus)

The Training Cloud is the primary recommendation if your priority is body composition. Pair it with a smart trainer, treadmill, rower, or Erg, and run hypoxic training sessions where the metabolic cost of equivalent work is elevated. The Training Cloud also doubles as a sleep system, so you get both training and overnight adaptation in one purchase.

Shop Training Cloud

If you want overnight metabolic adaptation

The Sleep Cloud is the right choice if you train outdoors or in a separate space, and you want altitude exposure during the recovery window between sessions. Sleep at altitude, recover at altitude, train at sea level the next day.

Shop Sleep Cloud

If you want full-room daily integration

The Altitude Bedroom System suits high-volume users running altitude exposure as a permanent part of their performance system. Your entire bedroom becomes the altitude environment. Two people share the same exposure.

Request a Bedroom System Quote

Trusted by World-Tour Athletes and Olympic Programs

The athletes using Box Altitude include cyclists who manage power-to-weight as a core training metric. 2024 Tour de France Femmes Champion Kasia Niewiadoma-Phinney runs Box Altitude as part of her performance system. Cameron Wurf of INEOS Grenadiers and Ironman uses altitude blocks across both disciplines. Box Altitude is the official altitude partner of Team Bahrain Victorious. The Queensland Academy of Sport supplies its athletes with Box Altitude systems. Australian national programs use Box Altitude for athlete preparation.

Kasia Niewiadoma-Phinney2024 Tour de France Femmes Champion
Cameron WurfINEOS Grenadiers & Ironman
Team Bahrain VictoriousOfficial altitude partner
Queensland Academy of SportSupplies athletes with Box Altitude
Australian National ProgramsAthlete preparation

For athletes pursuing race-day output, see altitude training for performance. For training-load tolerance and between-session recovery, see altitude training for recovery.

Frequently Asked Questions About Altitude Training and Weight Loss

Altitude training increases the metabolic cost of equivalent training and supports body composition adaptation through elevated growth hormone concentrations and improved metabolic efficiency. It produces measurable body composition change when combined with structured training and nutrition. It does not produce weight loss on its own.

Studies show up to 20% greater calorie expenditure during altitude training compared with the same session at sea level. The figure is the upper end of the range and varies by altitude, intensity, and individual response. Most users see numbers in the 10 to 20% range during structured sessions at 2,500m (8,202ft).

Studies show greater body fat reduction from HIIT in a hypoxic environment over a four-week training block than equivalent sea-level HIIT. The effect is real and measurable. It is not dramatic. It is the kind of difference that compounds across a training year for an athlete who is already training consistently.

Sleeping at altitude raises overnight metabolic demand and supports the physiological adaptations that influence energy expenditure at rest. The effect on body composition without combined training and nutrition is small. Sleeping at altitude is most effective alongside a structured training program.

Body composition changes from altitude exposure are as permanent as the underlying training and nutrition habits that produced them. Stopping altitude exposure does not cause rapid weight regain, but the metabolic adaptations gradually reverse over weeks once exposure ends. Athletes who run altitude as a sustained protocol maintain the adaptations year-round.

For more, see the full FAQ.

A Note on Health and Disclaimer

Altitude training supports performance, recovery, and body composition outcomes alongside structured training and nutrition. It is not a medical intervention, a treatment for obesity, or a substitute for clinical advice on weight management or any health condition. Consult your physician before starting an altitude protocol if you have a relevant cardiovascular, respiratory, or metabolic condition, or if you are pregnant.

Take the Next Step

Choose the Box Altitude system that fits your body composition goal.

Shop Training Cloud Shop Sleep Cloud Request a Bedroom System Quote