About Us

About the Company

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Based in Littleton Colorado, Altitude Fitness, LLC. has been designing products to enhance human performance since 1990. We are truly excited to be manufacturing and marketing the high altitude sleep chamber. Used by athletes around the world, our chamber allows you the benefits of high altitude training without the costs associated with traveling to premier sites where high altitude training usually takes place. We are beginning to explore applications of the sleep chamber to the health care industry as well as for military use and we are pleased to see that there is great promise.

We have been making the altitude chamber since 1991, which is a Legal, Safe, and Proven method to enhance your phycical ability.

Since beginning this new product line and exploring the ways it can improve people’s performance has us always leaning, and we hope for some great things to happen. This opportunity to serve others and help them achieve their goals has always been the driving force behind our growth and is reflected in our guiding mission.

Helping Others For The Highest Good
We hope you take the time to explore our site and make sure that you meet Bob Greska. His biography can be found on the home page; just click on this here and see where all our creativity and dedication come from. Feel free to contact us to find out more information about

our sleep chambers or just chat for a while. We really want to get to know you, right where you’re at, to see how we can be of service

 to you so make sure you visit the page ABOUT YOU. Share what you think and we’ll get right back to you if you want or send us your thoughts and we will share them with others in our FAQ section of our website.

Bob Greska, CEO & Founder

Bob Greska received his Bachelor of Science Degree in Mechanical Engineering from Southeastern Massachusetts University (Ranked #2 after MIT, Now Called U. Mass.) in 1978. He focused his studies on Material Science, specifically carbon, and mentored under his life-long friend, the developer of fiber optics.

Mr. Greska joined Lockheed Missile and Space in Sunnyvale, California, in 1978. After one year as a Materials Specialist with carbon fiber reinforced plastics, he was appointed as the Process Engineer to oversee the fabrication of the ceramic billets used for the Space Shuttles Columbia’s reentry heat shield tiles.

Bob-Hyperbaric (1)

In 1980, Mr. Greska relocated to Littleton, Colorado, and provided Materials Engineering support for Carbon Fiber spacecraft structures at Martin Marietta Aerospace. He provided design support for Boeing’s 767 aircraft engine nacelle. He worked on the Venus Magellan probe and Manned Maneuvering Unit (space backpack). Bob specified, coordinated, and oversaw testing of critical Carbon spacecraft components for special programs. He was the Materials Engineering “point man” at NASA in New Orleans, supporting the Space Shuttles external tank production scale-up. He managed and ran an $8M production operation for thermal ablative heat shield paint over a four-year period.

He reported to the head of Research and Development, of Martin Marietta, developing Carbon materials used for spacecraft laser strike defense.

In 1990, Mr. Greska dedicated his life to the advancement of health and human performance founding Engineering Innovations, LLC.

Engineering Innovations was a firm that design and manufactured carbon, carbon fiber, and Kevlar structures for the medical, sports, fitness, and aerospace communities. Mr. Greska was one of the pioneers in braiding Carbon fiber.

Bob Greska's Engineering Legacy

Space Shuttle

Mr. Greska oversaw and controlled processing parameters to fabricate the ceramic billets on the first shuttle to fly.

Space Shuttle
External Tanks

Mr. Greska worked at NASA to initiate test programs to establish the scale-up of external tank production.

Megellan Venus Probe

Mr. Greska tested the Megellan Venus Probe's reflective coatings to study the degradation resulting from the sun's intensity.


Mr. Greska provided material engineering support for the fiber reinforced structural frame for the Manned Maneuvering Unit.

Health and Human Performance

Robot Arm

Mr. Greska developed a revolutionary Carbon Fiber robot arm, graphite-wrapped baseball bats, drumsticks, violin bows, and many other carbon products.

Spring Loaded Shoe

Mr. Greska pioneered the modern day spring shoe, developing and testing prototypes at MIT in Cambridge, MA.

Metabolic Table

Mr. Greska produced large honeycomb-sandwich graphite-epoxy force platforms for human metabolic studies.

Glass Mandrel

Mr. Greska produced large honeycomb-sandwich graphite-epoxy force platforms for human metabolic studies. He also developed electrolysis devices to separate hydrogen fuel from water and to produce healthy alkalize drinking water

Hypobaric Chamber

Mr. Greska pioneered a personal hypobaric high-altitude simulation chamber providing known Tour De France Bicyclist a competitive edge. (see: www.Hypobaric.com)

Hydrogen Electrolysis

Mr. Greska developed many electrolysis devices to separate hydrogen fuel from water and to produce healthy alkalize drinking water.

Energy Return Crutches

Mr. Greska developed energy return crutches and carbon-fiber prosthetics that significantly helped disabled individuals.

Top-Fuel Dragster Seat

Mr. Greska's developed a body fitting graphite/Kevlar seat for top-fuel dragsters.

About Carbon 60, Inc.

In 2012, in a scientific breakthrough discovery, Mr. Greska created a non-solvent method to produce non-clustered, non-crystallized, contaminant-free, mono-molecular, food-grade, Carbon 60.

His exclusive method is the only contaminant-free Carbon 60 process to date. Bob spent 3+ years scaling up the process to produce working quantities of these clean C60 molecules. Traditional and current production methods for producing Carbon-60 contain trace contaminants from the impurities in the carbon rods and residual hydrocarbon solvent residues used to separate the C60 from the rod’s electric arc-produced soot.

After extensive scientific research, Mr. Greska realized the potential health and athletic performance benefits of ultra-clean Carbon 60 and formed Greska’s Carbon-60, Inc.

Our mission is to provide an affordable, clean, and highly bio-available Carbon 60 to support health and human performance.

We are committed to maintaining our highest standards associated with Carbon 60 production, bottling, packaging, and delivery. We strive to meet all regulatory rules, laws, and regulations to produce a high-quality dietary supplement. Our corporate headquarters and facilities are located in Littleton, Colorado