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1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minuteAfter an ISS mission, astronauts return in their assigned spacecraft and begin medical evaluation and individualized recovery on landing day. Earth’s gravity can temporarily disrupt balance, coordination, and walking. NASA says most crew members reach their preflight fitness baseline within 45 days, though recovery varies and some programs continue longer.
What happens on landing day?
Recovery begins with medical evaluations, followed by a reconditioning plan shaped by test results, the astronaut’s condition, and medical status. NASA describes a gradual program rather than a single standard itinerary for every return. The available guidance does not establish that every crew member is carried from the spacecraft or taken straight to a hospital.
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For a medical emergency requiring a return to Earth, NASA says the crew uses the spacecraft in which they launched so urgent care can be received on the ground. That emergency provision is distinct from the usual description of post-mission recovery. NASA’s health-care FAQ
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In microgravity, the body adapts to a very different environment. Once astronauts return to Earth, gravity again acts on their bodies, and NASA identifies possible effects on spatial orientation, head-eye and hand-eye coordination, balance, and locomotion. Some may also experience space motion sickness or postflight orthostatic intolerance: standing can cause lightheadedness or, in some cases, fainting. NASA’s overview of the human body in space
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The experience is not identical for everyone. NASA astronaut Andreas Mogensen described a postflight walk test this way: “With eyes closed, it was almost impossible to walk in a straight line.” Jasmin Moghbeli said, “I felt wobbly for the first two days.” Those are individual accounts, not a prediction of what every astronaut will feel. NASA’s astronaut recovery accounts
How long does it take to recover?
There is no single timetable for feeling normal again. NASA’s accounts include astronauts whose wobbliness or nausea eased over days, as well as people who felt mostly recovered after about a week or within a few weeks. These personal reports describe variation; they are not averages or guarantees.
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For physical fitness, NASA gives a broader benchmark: most crew members reach their preflight fitness baseline within the first 45 days after returning to Earth. NASA may extend an individual reconditioning program when needed. This benchmark does not mean every astronaut is fully recovered in 45 days.
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| Period | What NASA’s sources describe |
|---|---|
| Landing day | Medical evaluations and recovery exercises begin; the plan is individualized. NASA health-care FAQ |
| First days | Some astronauts report symptoms such as wobbliness or nausea that ease over days; experiences differ. NASA astronaut accounts |
| About a week to a few weeks | Some individual accounts describe feeling near-normal after about a week or mostly recovered within a couple of weeks; these are anecdotes, not a typical recovery rate. NASA astronaut accounts |
| Within 45 days | NASA says most crew members reach their preflight fitness baseline; some programs are extended. NASA health-care FAQ |
What does postflight reconditioning involve?
Specialists compare postflight results with preflight baselines and tailor exercise to the astronaut’s condition and medical status. NASA lists work on mobility, balance, flexibility, aerobic fitness, strength, endurance, and proprioception—the ability to sense body position and movement.
A 2011 NASA technical-report abstract described a program scheduled for two hours a day, seven days a week, for 45 days starting on landing day. That is a dated description of the program in that report, not evidence that every astronaut follows the same schedule today. NASA Technical Reports Server, 2011
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What other changes can persist after a mission?
Spaceflight affects multiple body systems, including bones and muscles, fluid distribution, vision, and sensorimotor function. NASA reports an average loss of 1% to 1.5% of mineral density per month in weight-bearing bones during spaceflight. That figure describes change during flight, not the speed of bone recovery after landing. NASA also says bone loss may not be completely corrected by rehabilitation, while fracture risk is not higher. NASA’s overview of the human body in space
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NASA has also presented a small, ongoing study involving a simulated capsule egress conducted 1–4 hours after landing. This is research, not a routine step established for every astronaut. NASA technical presentation, 2026
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