Astronaut Fitness Routine Highlights Life in Microgravity
The 20-minute class demonstrates the physical training required for humans to maintain bone and muscle health while in orbit.
Updated on Oct. 28, 2026 in Space
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Peloton released a 20-minute workout video featuring astronaut Jessica Meir recorded aboard the International Space Station. The class provides a look at how astronauts maintain muscle and bone density while living in microgravity.
Why it matters
Understanding how astronauts mitigate muscle and bone loss in space is critical for long-term human exploration missions. This exercise regimen helps maintain physiological health during extended stays in low-Earth orbit.
Astronauts commit 2.5 hours daily to exercise to counteract the effects of microgravity. The ARED resistance device allows for up to 600 pounds of load, simulating terrestrial weightlifting movements.
The players
Jessica Meir
An astronaut who demonstrated the physiological maintenance protocols used on the International Space Station.
Peloton
A fitness company that produces internet-connected stationary bikes and digital streaming workout content.
The details
In microgravity, astronauts use a waist belt secured to rigid side struts and straps on pedals to remain positioned during workouts. The Advanced Resistive Exercise Device (ARED) employs resistance to simulate Earth-bound movements like squats, deadlifts, and bench presses. These measures are essential to prevent the degradation of bone density and muscle mass that occurs when the body does not bear weight.
Timeline
2007: Sunita Williams completed a marathon in space in 4 hours and 24 minutes.
2016: Tim Peake completed a marathon in space in 3 hours and 35 minutes.
2020: Jessica Meir demonstrated exercise equipment on the International Space Station.
October 2026: Peloton released the fitness class featuring Jessica Meir.
The Tech Race
This effort builds upon years of athletic demonstrations on the International Space Station, starting with marathon runs by Sunita Williams and Tim Peake. It continues the mission of publicizing the extreme physical training required for orbital survival.
The 20-minute workout class is now available for free to the public via the Peloton app and YouTube. It offers users a practical view of the specialized exercise equipment required for life in microgravity.
The takeaway
Maintaining bone and muscle health remains a primary hurdle for future long-duration spaceflight beyond low-Earth orbit. Watch for future NASA disclosures regarding physiological data from current missions to understand the threshold for human endurance in space.
Further reading
For broader context on current orbital missions, visit our Space section.
Source note: This article includes information reported by CNET.
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